Demand Radar · Updated 2026-11-12

Today's Picks

#1Desktop app2 posts

Fine-tune external audio track delay in real time on Apple Silicon Macs and merge it with the video

Import video and external audio tracks on an Apple Silicon Mac, preview in real time and fine-tune the delay, then merge losslessly once satisfied; the existing Avidemux doesn't support M-series chips, IINA/mpv only take effect after dragging the progress bar following adjustments, and professional editing software is too heavy ().

8.3Score

1.9 NEWHeat

Difficulty

Willing to pay

Weak competitionCompetition

~10–14 daysEst. build

Original post

Details

Why build it

The overall score of 8.3 is the highest in the whole table, and heat rose from 0.00 a week ago to 1.93, indicating clear warming; willingness to pay is 3, the pain point is concrete, competitor check is weak, and the gap is a complete lightweight workflow of "real-time preview with fine-tuned delay + one-click lossless merge." The risk is that DaVinci Resolve/Shotcut can already handle alignment and export, and audio/video container and codec handling has a barrier to entry, so "lightweight, real-time, one-click" must be clearly better than the manual mpv+ffmpeg workflow.

Suggested form

A local native macOS utility, prioritizing AVFoundation for real-time preview, with export able to call ffmpeg for remuxing/re-encoding.

MVP features

Drag in video and external audio tracks to build a synchronized preview timeline
Delay slider/millisecond input takes effect in real time, no need to drag the progress bar while previewing
One-click export of a losslessly merged file, keeping the original codec or only remuxing

How to validate

Reply to the original post with a 30-second demo video; post a beta recruitment on Reddit's r/macapps and r/VideoEditing, and collect 5–10 real video + external audio track samples.

Adjust external audio delay in real time on Mac and merge it in sync with video reddit/r/macapps

Competitors

PolyCapture, Isocast

Gap

No tool in the search results covers the complete workflow of "real-time preview delay fine-tuning for external audio tracks + lossless merge once satisfied": AV Sync Fix is more of a one-off correction, SyncForge/viode are more command-line or render-oriented, PolyCapture targets merging recorded footage, and Isocast is still early-stage. There is still a clear gap for lightweight real-time fine-tuning plus lossless merging on Apple Silicon.

#2Desktop app2 posts

A photo management tool that browses folders in place like Picasa, without importing into a database

Browse, tag, and deduplicate hundreds of thousands of photos directly in folders without importing into a proprietary database; tags and organization results must be portable, ideally written to XMP sidecars, and support external drives and continued tracking after folder renames ().

6.3Score

1.6 ▶Heat

Difficulty

Willing to pay

Weak competitionCompetition

~25–35 daysEst. build

Original post

Details

Why build it

Overall score 6.3, willingness to pay 3, competitor check weak; Sortroom has been questioned over its subscription model, AI classification, external drives, and tag retention after renaming, while digiKam/XnView MP only partially satisfy the need. The risk is that photo management is a large engineering effort, with thumbnail performance, deduplication, and file monitoring all being heavy; heat dropped from 1.86 a week ago to 1.58, indicating cooling discussion, so it's necessary to first validate whether "in-place browsing + XMP portability" is strong enough.

Suggested form

Local desktop software, Tauri/Electron shell + Rust image indexing, prioritizing macOS/Windows.

MVP features

In-place folder browsing with a thumbnail grid, without building a proprietary photo library
Tags/ratings written to XMP sidecars and readable back from sidecars
After external drive and folder renames, maintain tag associations via content hashes/file IDs

How to validate

Reply to the original post; post a "photo management without importing into a database" beta thread on r/Photography, r/DataHoarder, and r/macapps, and demo performance with 10,000 photos.

A photo manager that directly manages local folders like Picasa, without importing into a private library reddit/r/macapps

Competitors

Imagin-Raw, FlashView, RAWviewer

Gap

None of the search results include a tool that fully covers all four points at once: in-place folder browsing of hundreds of thousands of photos, tags/ratings written to portable XMP sidecars, external drive support, and automatic tracking after folder renames. Existing tools either only do RAW culling (FlashView, RAWviewer, photo-review, apertin), build their own library (TagStudio), are at a very early version (RAWmakase 0.4.x), or are mobile-only (F-Stop). So there is still clear room for a desktop app that truly rivals Picasa, treats folders as first-class citizens, and keeps metadata fully portable.

#3Plugin

Joplin supports saving and browsing images directly as notes

Save scans and images as standalone notes and browse them in the list alongside other notes; Joplin currently can only embed images as attachments in notes, attachments don't appear in the note list, and can't be opened and browsed separately ().

5.9Score

1.0 NEWHeat

Difficulty

Willing to pay

No competitorCompetition

~5–8 daysEst. build

Original post

Details

Why build it

Overall score 5.9, difficulty only 2, competitor check none, and the gap is clear; the user coming from Obsidian shows the need is real and interaction expectations are clear. The risk is that the Joplin plugin API may not be able to put attachments directly into the native note list, so API feasibility must be validated first; willingness to pay is 2, the need is niche, making it suitable as a plugin rather than a standalone product.

Suggested form

A Joplin plugin, prioritizing reuse of the attachment and note list APIs, without modifying Joplin core.

MVP features

Scan image attachments in the vault and generate an "image notes" index
Show image thumbnails/titles in the Joplin note list, and allow opening them directly for viewing
Preserve bidirectional links with the original attachments, and sync the index on move/delete

How to validate

Reply to the original post on the Joplin forum; post a prototype in the Joplin official forum plugin section and Joplin-related subreddits, and collect "willing to install" replies and 3–5 real vault samples.

Competitors

Note Overview (Joplin plugin), Joplin forum "Images As Notes?" discussion, OCR plugin (ylc395)

Gap

No plugin in the search results implements "saving images as standalone notes and browsing them alongside other notes in the note list"; existing tools only do thumbnail display, OCR, or attachment management, so the core need remains unmet and there is room for development.

#4Browser extension

Unified management of multiple shopping cashback/coupon extensions, avoiding duplicate price comparisons

Users have Coupert, Capital One, and multiple other shopping extensions installed at the same time, with price comparison, coupon finding, and cashback information scattered, making it impossible to confirm whether they're seeing the same set of offers; they want a unified panel to aggregate and deduplicate ().

5.7Score

0.9 NEWHeat

Difficulty

Willing to pay

No competitorCompetition

~10–15 daysEst. build

Original post

Details

Why build it

Overall score 5.7, competitor check none, indicating there's no direct competitor for "unified aggregation of multiple cashback/coupon extensions with deduplicated price comparison"; the pain point is that everyday shopping gets complicated, and it's easy to demo. The risk is that browser extensions can't communicate directly with each other, and reading cashback rates across extensions has technical and compliance limits; willingness to pay is 2, and affiliate marketing compliance and later maintenance costs must be considered in advance.

Suggested form

A browser extension, starting with "manual channel selection + scraping visible offers on the current page + unified panel," without promising to read other extensions' internal data.

MVP features

Aggregate and display the user-selected cashback/coupon channels and visible cashback rates on the current product page
Deduplicate the same product and highlight the highest cashback/best coupon
One-click jump or apply the best channel, allowing users to manually correct results

How to validate

Reply to the original post; post a waitlist for a "unified panel for multiple cashback extensions" on r/Frugal and r/chrome_extensions, asking users to submit 3 frequently shopped sites for adaptation.

Gap

No tool in the search results can unify the cashback rates and available offers from multiple cashback/coupon extensions (such as Coupert and Capital One) on the same product and deduplicate price comparisons. Existing tools are either yet another similar extension, only rank offers for a single platform, or remain at the command-line aggregation layer. There is a clear gap for a browser extension that reads/aggregates cashback and offer information from installed extensions and displays the best combination deduplicated.

#5Plugin

Fix broken footnote links after importing LibreOffice/OpenOffice into Obsidian and convert them to standard Markdown footnotes

When copying or converting from LibreOffice/OpenOffice to Obsidian, footnotes become endnotes, and links become broken anchors like [174](#sdfootnote174sym) and [174](#sdfootnote174anc); these need to be batch-fixed and converted to Obsidian standard [^174] / [^174]: footnotes ().

5.6Score

0.9 ▶Heat

Difficulty

Willing to pay

Weak competitionCompetition

~5–8 daysEst. build

Original post

Details

Why build it

Overall score 5.6, competitor check weak, existing replies only give regex ideas and a "movable footnotes" plugin, with no complete fix tool; the scenario is clear and easy to demo before/after. The risk is that the scenario is narrow, regex fixes have many edge cases, and users may just use AI to generate a one-off script; the plugin's value must be demonstrated in "batch, previewable, rollback-able."

Suggested form

An Obsidian plugin is preferred, but a small web tool (paste Markdown to preview fix results) could also be built first.

MVP features

Identify and pair #sdfootnote...sym and ...anc anchors
Batch-convert to standard [^n] and [^n]: footnotes
Preview the diff and write back with one click, with undo support

How to validate

Reply to the original post; post a "LibreOffice footnote fix" demo on the Obsidian forum and r/ObsidianMD, and collect users' actual broken Markdown samples.

Competitors

Pandoc (invoked via the Obsidian Pandoc plugin), QuickAdd macro + regex replacement, Sidenotes plugin

Gap

Search results show no plugin specifically designed to fix the #sdfootnote…sym/anc anchors produced by LibreOffice/OpenOffice copy-paste and convert them into Obsidian Markdown footnote syntax; existing solutions either rely on the external Pandoc tool with manual configuration, only handle plain-text footnotes and require users to write their own regex, or are standalone converters rather than Obsidian plugins. There is still room for an out-of-the-box Obsidian plugin that can recognize and rewrite LibreOffice footnote anchors and preserve the corresponding footnotes when splitting by chapter.

Full Analysis

Other needs

Wish there were a tool that parses the internal structure of an Excel workbook like an X-ray (formula dependencies, dead code, hidden references) Original post
Need a local-first simple database management tool with a web interface that can manage images, videos, and other assets and export to Excel Original post
Quickly look up and add abbreviation entries in Obsidian Original post
Need a lottery tool that reliably draws winning users from comments on V2EX posts Original post
Automatically collect emails and chat messages into Notion without manual copy-pasting Original post
Split the window in Google Sheets like LibreOffice to view cells in different areas at the same time Original post
Notion database bulk page update share preview images are broken; need a reliable bulk solution Original post
Automatically sync Google Calendar events to a Notion database calendar view Original post
Auto-complete backlinks and directly insert aliases when typing | in Obsidian Original post
Quickly capture ideas on iPhone and Apple Watch, organize them with local AI, and send them to an Obsidian inbox Original post
Disable the "make something great" prompt that pops up when clicking in Notion, to avoid page jumping Original post
Conveniently preview footnote content in Obsidian's edit mode Original post
Make Chrome's media play/pause key control only the tab that's currently producing sound, instead of randomly waking up a paused YouTube tab in the background Original post
Want Obsidian's "Move line up/down" shortcuts restored to move only a single line, separated from Smart Lists' list logic Original post
Insert a blank placeholder of custom width into the macOS menu bar to force hidden arrows to appear Original post
The move/indent command behavior of Obsidian smart lists doesn't work as expected; hoping for improvements Original post
Unify VS Code's screenshot tools and capture the currently developed app window to attach directly to chat Original post
A tool for creating step-by-step illustrated guides for offline processes like household chores Original post
Write PR comments directly in VS Code's Agents Window and sync them to GitHub Original post
Clipboard history tool needs to support quickly selecting entries from bottom to top using arrow keys Original post
Fill the area below the line in an Excel scatter chart while keeping it linked to live data updates Original post
Stop websites from repeatedly stuffing the same page into browsing history via history.pushState Original post
The Obsidian Pantry plugin configuration is too complex; hoping for a simpler recipe and inventory management solution Original post
Use LLMs to identify and filter ad content in web feeds Original post
Wish for a GPU rental price comparison and arbitrage platform Original post
Provide a GUI tool for signing text with SSH keys Original post
Chrome history only saves the final state of single-page apps; want every visit fully recorded Original post
Obsidian's "Move line up/down" commands should respect list structure and blank-line grouping Original post
Highlight the text cursor position while typing (similar to the Find My Mouse spotlight effect) Original post
When mail-merging and batch-sending PDFs, want the PDF filename and email subject to automatically include the recipient's name Original post
Make Obsidian notes appear in Android system search (Samsung Finder, Pixel Launcher) Original post
A window protection mode that prevents accidentally closing important windows Original post
Compile publicly available processor wafer photos into a high-quality illustrated book with detailed explanations Original post
Make shopping sites always display prices in local currency Original post
Move Obsidian's left ribbon bar to near the tab bar in the top right Original post
Collapse/expand code blocks in Inkdrop's preview mode Original post
Streamline the Chrome right-click menu by removing unwanted menu items Original post
Obsidian Bases formulas lack math functions like powers, square roots, and trigonometry Original post
Local digital signage player: loops through PDFs, images, and videos by playlist Original post
Retroactively calculate historical daily writing word counts in Obsidian and sync stats across devices Original post
Wanting a genuinely usable task planning tool that eases planning anxiety Original post
Make a cell display in real time the value of the last-clicked cell within a specified range Original post
In Obsidian, return to the parent bullet level after a sub-list ends and align it correctly Original post
A browser extension that blocks AI-generated content and content from after 2022 Original post
Rebuilding a video clip editing and sharing Chrome extension for YouTube Original post

Makers' showcase (40)

Posts where people present a tool or workaround they built themselves (not counted as needs). Last 30 days, by engagement.

I made a plugin that keeps track of your characters while you write a novel Plugin · reddit/r/ObsidianMD · ▲ 241
An Obsidian plugin that automatically tracks character state (location, relationships, known information) while writing a novel. The author has released the Motif plugin, which largely meets the need, but it is still in
An extension that unzips ZIP files while they're still downloading Browser extension · reddit/r/browsers · ▲ 126
Extract while downloading ZIPs without saving the original archive to disk. The author has released the DirectExtract Chrome extension and published it to the store with complete functionality (streaming extraction, secu
I built a tool that auto-generates table definition documents and ER diagrams, then has AI answer questions about the table structure Desktop app · qiita · ▲ 80
Automatically generate database table definition documents and ER diagrams, and let AI understand table structures via MCP. The author has open-sourced dbxray on GitHub and released v0.4.2, fully implementing the need (t
I got 300 users overnight Browser extension · reddit/r/chrome_extensions · ▲ 74
A Chrome extension that expands page margins on PDFs and adds text, images, and freehand annotations. The author has developed and released the SidePDF extension to solve this need, and it already has 300+ active users
I built an Obsidian plugin to sync browser bookmarks with a vault Plugin · reddit/r/ObsidianMD · ▲ 61
Sync browser bookmarks into an Obsidian vault, with a desire for reverse sync. The author has built a one-way sync plugin (Bookmarks Sync) that solves browser→Obsidian syncing; however, the reverse sync the user explicit
I built a free extension that sorts your YouTube subscriptions into folders (offline, no account) Browser extension · reddit/r/chrome_extensions · ▲ 40
A browser extension that automatically organizes YouTube subscribed channels into folders. The author has released the SubShelf extension (free on Chrome/Edge), implementing core needs such as automatic subscription fold
Extension that made my life a little easier . Browser extension · reddit/r/browsers · ▲ 24
Provide local multi-board management and favorites for the free version of Excalidraw. The poster jim-jam-biscuit developed the Excaliboard extension themselves and provided a link, which meets the need; however, it is a
I made a small plugin that shows image size and dimensions in the status bar Plugin · reddit/r/ObsidianMD · ▲ 19
Show image file size and pixel dimensions in the Obsidian status bar. The author has released the better-image-info plugin (community directory + GitHub + BRAT installation), fully meeting the need to view image size and
I made a plugin to browse your Letterboxd history in Obsidian Plugin · reddit/r/ObsidianMD · ▲ 18
Browse and back up Letterboxd viewing records in Obsidian. The author developed the Letterboxd Library plugin themselves and published it to the Obsidian community plugin marketplace; it is free to use and basically meet
I built this extension that let's you download png images from internet with a simple download button it's so simple to use. Browser extension · reddit/r/chrome_extensions · ▲ 16
A Chrome extension that downloads web images with one click and converts them to PNG. The right-click Save As steps are cumbersome, and downloaded images are often low quality or not in PNG format; users who need many im
made a chrome extension that writes replies to facebook page comments for you Browser extension · reddit/r/chrome_extensions · ▲ 16
A Chrome extension that automatically generates replies to Facebook Page comments. The author has released a usable Chrome extension themselves, but it only covers comment replies, not direct messages, and is at the pers
I got tired of repeating search → check surrounding context → copy every time I investigated logs, so I tried building a VS Code extension Plugin · qiita · ▲ 16
View, search, filter logs by time/level, and see context directly in VS Code. The author has released the VS Code extension Log Workbench S and published it to the Marketplace, so the need is met; however, it is still a
I consulted Codex about wanting pending approvals to be notified to Discord, and tried building a notification tool Plugin · qiita · ▲ 14
Get notified on your phone via Discord when Codex is waiting for approval/input. When running tasks with Codex and leaving the computer, you cannot promptly know whether it is stuck waiting for approval, waiting for inpu
I made a free extension to record web bugs into a standalone HTML file. Need some advice. Browser extension · reddit/r/chrome_extensions · ▲ 13
Record web bugs offline and export them as standalone HTML report files. The author has released a free offline extension themselves, basically meeting the recording and export needs, but key issues such as redaction rel
I spent 2 years building a recurring schedule plugin for Notion Plugin · reddit/r/Notion · ▲ 12
Generate and display recurring tasks in advance in Notion to make planning ahead easier. Notion's built-in recurring templates and automations only generate tasks on the day of the task or after completion, so users cann
I built a tiny Chrome extension for Vinted. Getting real users is harder than building it Browser extension · reddit/r/chrome_extensions · ▲ 11
A Chrome extension for Vinted favorites that provides folder categorization, search, and hiding sold items. Vinted users save more and more items (some have over 400), and the official favorites list can only display the
I built a Chrome extension that shows Glassdoor ratings directly in LinkedIn job search Browser extension · reddit/r/chrome_extensions · ▲ 10
Show company Glassdoor ratings directly in the LinkedIn job list. The author has released a usable Chrome extension, Employer Ratings for Job Search, which implements this need and uses a freemium model
I built LangBlock, a YouTube Language Filter to remove deceivingly titled videos. Browser extension · reddit/r/browsers · ▲ 10
Filter out YouTube videos whose title language does not match their content language. The author has developed and published the LangBlock Chrome extension (https://chromewebstore.google.com/detail/langblock-youtube-lang
Random Theme: a lazy way to discover new themes Plugin · reddit/r/ObsidianMD · ▲ 10
A plugin that randomly discovers and automatically downloads Obsidian community themes. The author has released the Random Theme plugin themselves, fully implementing random discovery, automatic download, marking, and cl
I built a Chrome extension to easily switch between Work and Personal filtering on X Browser extension · reddit/r/browsers · ▲ 9
A keyword-filtering toggle extension that provides separate work/personal profiles for X. The author has already developed and published DotLens to the Chrome Web Store, so the need is met by an existing extension; only
I made a Chrome extension that adds download buttons to social media—and I’m not sure how to reach the people who’d use it Browser extension · reddit/r/chrome_extensions · ▲ 8
Add download buttons directly on social media pages, saving the hassle of copying a link and opening a third-party site. When you want to save an image or video from social media, you have to copy the link, open another
I built an extension that catches free trials and subscriptions as you sign up, with no bank or Gmail access. Looking for feedback Browser extension · reddit/r/chrome_extensions · ▲ 7
Browser extension that automatically detects free trials and subscriptions and reminds before expiry. Users often forget to cancel after signing up for free trials or subscriptions, resulting in charges; existing subscri
Obsidian REST API is amazing for giving LLMs read access to my notes Plugin · reddit/r/ObsidianMD · ▲ 7
Let LLM/AI coding assistants read an Obsidian vault as background context. A researcher's years of notes are scattered across Obsidian, and AI tools like Claude Code can't access this background knowledge, so they have t
I created a simple extension that lets you navigate to websites using only their name Browser extension · reddit/r/chrome_extensions · ▲ 7
A browser extension that jumps quickly using site names instead of URLs. The author has already published a working Go Chrome extension and listed it on the store, so the need is met, but the product is still fairly simp
SMRTube Extension Browser extension · reddit/r/browsers · ▲ 7
A browser extension that redesigns the YouTube interface. YouTube's official interface is getting increasingly cluttered, and users want a cleaner layout that better fits their personal habits.
Building a Chrome extension for Instagram on desktop: 3 weeks in, slow growth, and what I learned (looking for honest feedback) Browser extension · reddit/r/chrome_extensions · ▲ 7
A Chrome extension that makes Instagram's web version better on desktop (multi-column layout, video column, etc.). Instagram's desktop web version just stretches the mobile layout, resulting in low information density an
I made a free extension that skips AliExpress “Bundle deals” pages and takes you straight to the product Browser extension · reddit/r/browsers · ▲ 7
Skip AliExpress's bundle-sale pages and go straight to the product detail page. The author has already developed and listed Bundle Buster (Chrome Web Store and Firefox Add-ons), which directly meets the need.
I made a Chrome extension that puts my ChatGPT, Claude, Gemini and Grok chats into one set of projects Browser extension · reddit/r/chrome_extensions · ▲ 7
Unify chat histories from ChatGPT, Claude, Gemini, and Grok into a single set of project folders. The author has already published the Relay Chrome extension (with a store link) to solve this need, and no one in the repl
Windows 11's Explorer was too slow, so I built a file manager in Rust Desktop app · qiita · ▲ 6
Windows 11 Explorer is too laggy, so I built a multi-pane file manager in Rust. Windows 11 Explorer has become slow, and its tabs and right-click menu are hard to use, lacking efficient operations like multi-pane, cross-
Recreating Perchance.org’s manual text generator using JS Engine for Obsidian (No AI) Plugin · reddit/r/ObsidianMD · ▲ 6
Replicating a Perchance-style manual text generator in Obsidian with JS. The user wants to do templated random text generation directly inside Obsidian notes (similar to Perchance.org's manual generator), but doesn't wan
I made a Chrome extension that lets you keep scrolling into the next chapter of a web novelBody Browser extension · reddit/r/chrome_extensions · ▲ 6
A web novel reader that automatically loads the next chapter for infinite scrolling. When reading web novels on a computer, you have to manually click the "Next Chapter" button after every chapter, which interrupts the r
I built a Chrome extension to organize YouTube subscriptions into groups body Browser extension · reddit/r/chrome_extensions · ▲ 6
Organize YouTube subscribed channels into groups for easy lookup and bulk cleanup. With too many subscribed channels, the list becomes long and unwieldy, making it hard to quickly find the channels you want and inconveni
I built a browser extension that lets you lock websites with a PIN 🔐 Browser extension · reddit/r/chrome_extensions · ▲ 6
Lock specific websites in the browser with a PIN to prevent others from snooping. The author has built the Private Space extension as a solution, but it's still under review and has issues with content flashing and disab
Made a small extension to copy a whole Gmail thread as plain text Browser extension · reddit/r/chrome_extensions · ▲ 5
Copy an entire Gmail email thread in order as plain text or export to txt/json. The author's own MailClip extension already supports copying entire threads in order and exporting to txt/json, and handles expanding collap
I had 166 tabs open “for later”, so I built a free Chrome extension that keeps every tab you close as a reading list Browser extension · reddit/r/chrome_extensions · ▲ 5
Chrome extension that automatically saves closed tabs to a read-later list. Too many tabs open to bear closing them, but once closed, they fear they won't find them later; there's a lack of a read-later tool that automat
I built a free extension that warns you before a "free" PDF/resume/logo tool asks you to pay at the end Browser extension · reddit/r/chrome_extensions · ▲ 5
A browser extension that warns users before they click "free" PDF/resume/logo tools that will ultimately charge them. The author has already developed and listed BaitWall (Chrome Web Store and Firefox Add-ons), implement
It started to feel ridiculous to keep using clasp — how hitting GAS directly with a Python MCP made fixes lightning-fast and even improved code quality. Script / automation · qiita · ▲ 5
An MCP tool that lets AI directly read and write cloud GAS code, eliminating the need for local clasp syncing. The author has already fully implemented this need with gas-manager (Python FastMCP + GAS API + reusing clasp
Built a chrome extension that tells you the lowest price for for your credit card -with link to the site and tells whether to buy or wait based on price history - Works in Amazon.in and Flipkart india Browser extension · reddit/r/chrome_extensions · ▲ 5
A Chrome extension for cross-e-commerce price comparison and purchase-timing hints combined with credit card offers. The author has already published the RealDeal extension as a solution, but it only covers two Indian si
I built a Chrome extension to teach my coding agents about my app's API Browser extension · reddit/r/chrome_extensions · ▲ 5
Capture already-logged-in API requests in the browser for AI coding assistants to query real endpoints. The author has already published the Netraptor Chrome extension and MCP server, with a store link given in the repli
"Just point your phone at it" to get mahjong scores, so I ran tile recognition entirely in the browser Mobile app · qiita · ▲ 5
Point your phone camera at your mahjong hand to automatically recognize the tiles and calculate the score. The author has already developed and released mjtensu, a PWA that runs entirely in the browser; just point the ca

Topic	Number of Requests	Platforms Involved	Representative Requests (write IDs)
Note-taking software and knowledge management plugins	45	Obsidian Forum, Joplin Forum, Inkdrop Forum, Reddit, GitHub	forum:joplin:51504, reddit:1xmmvbz, forum:obsidian:121647, reddit:1x4vjcy, reddit:1x1qbed
Browser extensions and web browsing enhancements	32	Reddit, Hacker News, Chrome/Edge extension ecosystem	reddit:1xr8j7h, reddit:1xqaqhb, hn:50427481, reddit:1x3bdh5, reddit:1xsc7yj
System and desktop productivity tools	13	Hacker News, GitHub, Appinn, Qiita, Reddit	reddit:1xrbyal, qiita:7cc87ee688f5d8060f4c, gh:microsoft/PowerToys#51989, hn:49806516, forum:appinn:95223
Developer tools and code collaboration	13	GitHub, SE, Hacker News	gh:microsoft/vscode#347498, se:softwarerecs:95777, se:softwarerecs:95656, gh:microsoft/vscode#347314, hn:50450786
Office spreadsheets and document automation	11	Reddit, Qiita, SE	qiita:1bd62fdb86fa7c2a17db, reddit:1xhst2h, reddit:1xp4969, reddit:1xnfpsl, reddit:1wzvzc1
Tasks, calendars, and Notion integrations	9	Reddit	reddit:1xfr8v3, reddit:1xssikc, reddit:1xlwp3a, reddit:1wwvj3x, reddit:1xid69e
Media and PDF/image processing	9	Reddit, SE, V2EX, Obsidian Forum	reddit:1xpxkde, reddit:1xhwqwp, reddit:1x254gu, reddit:1wrc4n5, reddit:1wwkr66
E-commerce shopping and price tracking	7	Reddit, Hacker News	reddit:1xp18ee, reddit:1x01j7l, reddit:1xnzwou, hn:49886395, reddit:1xo6knv
Mobile and offline recording apps	6	Reddit, Obsidian Forum	reddit:1xpqtsc, reddit:1xedimn, reddit:1x0n4fv, reddit:1wus8s7, reddit:1xq2l5m
Niche web mini-tools	5	V2EX, Hacker News, SE	v2ex:1253695, hn:50427769, hn:50407616, v2ex:1255771, se:softwarerecs:95711

Topic

Number of Requests

Platforms Involved

Representative Requests (write IDs)

Note-taking software and knowledge management plugins

Obsidian Forum, Joplin Forum, Inkdrop Forum, Reddit, GitHub

forum:joplin:51504, reddit:1xmmvbz, forum:obsidian:121647, reddit:1x4vjcy, reddit:1x1qbed

Browser extensions and web browsing enhancements

Reddit, Hacker News, Chrome/Edge extension ecosystem

reddit:1xr8j7h, reddit:1xqaqhb, hn:50427481, reddit:1x3bdh5, reddit:1xsc7yj

System and desktop productivity tools

Hacker News, GitHub, Appinn, Qiita, Reddit

reddit:1xrbyal, qiita:7cc87ee688f5d8060f4c, gh:microsoft/PowerToys#51989, hn:49806516, forum:appinn:95223

Developer tools and code collaboration

GitHub, SE, Hacker News

gh:microsoft/vscode#347498, se:softwarerecs:95777, se:softwarerecs:95656, gh:microsoft/vscode#347314, hn:50450786

Office spreadsheets and document automation

Reddit, Qiita, SE

qiita:1bd62fdb86fa7c2a17db, reddit:1xhst2h, reddit:1xp4969, reddit:1xnfpsl, reddit:1wzvzc1

Tasks, calendars, and Notion integrations

reddit:1xfr8v3, reddit:1xssikc, reddit:1xlwp3a, reddit:1wwvj3x, reddit:1xid69e

Media and PDF/image processing

Reddit, SE, V2EX, Obsidian Forum

reddit:1xpxkde, reddit:1xhwqwp, reddit:1x254gu, reddit:1wrc4n5, reddit:1wwkr66

E-commerce shopping and price tracking

Reddit, Hacker News

reddit:1xp18ee, reddit:1x01j7l, reddit:1xnzwou, hn:49886395, reddit:1xo6knv

Mobile and offline recording apps

Reddit, Obsidian Forum

reddit:1xpqtsc, reddit:1xedimn, reddit:1x0n4fv, reddit:1wus8s7, reddit:1xq2l5m

Niche web mini-tools

V2EX, Hacker News, SE

v2ex:1253695, hn:50427769, hn:50407616, v2ex:1255771, se:softwarerecs:95711

Cross-platform common needs

AI/low-quality content filtering and browsing distraction cleanup: Appears on Hacker News and Reddit. On HN, it leans toward "identifying/detecting AI text, AI apps, AI headlines on HN" (hn:50427481, hn:50412017, hn:50429391, hn:50391275); on Reddit, it leans toward "blocking AI-generated content, truncating search results by date, filtering children's videos" (reddit:1x6mt90, reddit:1xsc7yj). The common thread is browser extensions doing configurable filtering at the feed/search-results layer, rather than relying solely on uBlock rules.
Automatically writing external information into Notion/calendar/task systems: Appears repeatedly on Reddit. Notion users want emails/chats/calendars to flow automatically into databases (reddit:1xfr8v3, reddit:1xssikc), and also want to batch-update page preview images (reddit:1xt8lva); Google Calendar users want editable task cards and Tasks mapped by group to different calendars (reddit:1xlwp3a, reddit:1wwvj3x). The wording differs, but the shared gap is "two-way writing that preserves fields/properties," not read-only display.
Obsidian's lists, tasks, and editing experience fall short: Raised on both Reddit and the Obsidian forum. On Reddit, it leans toward "don't make one note per task; want TickTick-style/Bases kanban/plugin-light LifeOS" (reddit:1x3qlgy, reddit:1x01rfe, reddit:1wy8lmf, reddit:1wwsmtr); on the forum, it leans toward command behaviors like "move up/down, indent, Smart Lists, blank-line grouping" (forum:obsidian:121647, forum:obsidian:121691). The common thread is that users are willing to install plugins, but the native list/task model isn't sufficient.
PDF editing, conversion, search, and tagging: Spans Reddit, SE, and the Obsidian forum. Reddit wants AI batch PDF editing, PDF notes converted to Markdown, and mobile handwritten annotations (reddit:1x254gu, reddit:1wrc4n5, reddit:1x3xp2t); SE wants to filter PDFs by page count (se:softwarerecs:95654); the Obsidian forum wants to tag PDF attachments into Bases (forum:obsidian:121798). The common thread is a lack of lightweight PDF processing tools, though the entry point differs by platform.
Shopping prices and deal information are scattered: Appears repeatedly on Reddit. Some want a unified cashback/coupon extension (reddit:1xp18ee), some want cross-store price-drop tracking (reddit:1x01j7l), some want to force local currency (reddit:1xnzwou), some want to block Shop's auto sign-up (reddit:1x4f4b3), and others scrape Lego/Yu-Gi-Oh prices in Sheets (reddit:1xo6knv, reddit:1wr8d4o). The common thread is that shopping decision information is scattered and sites' default behaviors are uncontrollable.
Editing and privacy redaction after screenshots/screen recordings are fragmented: Spans Reddit and GitHub. Reddit wants local saving, full-page scrolling screenshots, annotation and redaction, and recording + zoom + editing in one (reddit:1wrvarq, reddit:1x2fzp5); GitHub wants a unified screenshot entry point in VS Code and to capture a debugging app window and attach it to chat (gh:microsoft/vscode#347498). The common thread is that the "capture—edit—redact—send" flow is disjointed.
macOS lacks fine-grained system toggles: Spans Reddit, Hacker News, and the Obsidian forum. Reddit wants a blank menu bar placeholder to force hidden arrows to show (reddit:1xrbyal); HN wants a mouse acceleration GUI and Secure Enclave SSH touch caching (hn:49806516, hn:50450786); the Obsidian forum wants to hide inline titles in macOS Quick Look (forum:obsidian:121820). The common thread is single-point small toggles, with willingness to pay around 3, but the demand is scattered.