App Pain API
Find what users hate about any iOS or Android app through clustered complaint analysis and trends.
Analyzes recent app store reviews to identify and rank user pain points across iOS and Android apps. Clusters negative reviews by theme, tracks how complaints change over time, and supports competitor monitoring via webhooks. No API key required for basic use.
Try asking Muse: "Show me the top complaints users have about Spotify and how they've changed in the last month."
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Source: Found in the official MCP Registry (io.github.apppainapi/app-pain-api) · First listed October 29, 2026
Last 24 hours
Each bar is one check, every 15 minutes. Green means it answered. Last checked 2 h ago.
Is it safe to connect?
What Muse can see: It does not ask you to sign in, so it cannot see your accounts. It only sees what Muse sends it from your request.
Before it acts: Read what Muse plans to do before you approve it, and remove the app from Muse when you stop using it.
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How to add it to Muse
Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
https://app-pain-api.quiet-delta.workers.dev/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Also use it in ChatGPT or Claude
App Pain API is a remote MCP server, so any assistant that can add a custom connector by link can use it. Same link, same tools.
Add it to ChatGPT
- 1
Open ChatGPT settings
In ChatGPT, open Settings, then Connectors (called Apps & Connectors on some accounts).
- 2
Turn on developer mode
Under Advanced settings, switch on Developer mode. That is what lets you add a connector by link.
- 3
Create the connector
Choose Create, give it a name, paste the link as the MCP server URL, and save. If it needs a sign-in, ChatGPT asks for it here.
- 4
Use it in a chat
Start a chat, open the tools menu, pick the connector, and ask. ChatGPT asks before it runs a tool the first time.
Custom connectors need a paid ChatGPT plan, and on Team, Enterprise and Edu accounts only an admin can add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in ChatGPT
Add it to Claude
- 1
Open Claude settings
In Claude, open Settings, then Connectors.
- 2
Add a custom connector
Choose Add custom connector, give it a name, and paste the link.
- 3
Connect and use it
If it needs a sign-in, Claude sends you to it. Then turn the connector on in a chat from the tools menu and ask.
Custom connectors are available on paid Claude plans; on Team and Enterprise accounts an admin may need to add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in Claude
https://app-pain-api.quiet-delta.workers.dev/mcpWhat people ask Muse to do
Technical details: safety screening, tools, response time and recent checks
Response time at the last check: 89ms. Worked in n/a of checks over 30 days.
Screening · October 29, 2026
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
Tools · 7
search_appsSearch the iOS App Store and Google Play (both merged by default) to find apps and their ids. Use this FIRST when you only know an app name or a category.mine_app_pain_pointsTHE core tool: fetch recent reviews of any iOS/Android app, keep the negative ones, and cluster them into ranked pain points (title, sharePercent, severity 1-5, verbatim evidence quotes). Ideal for competitive research and product discovery. Cached 7 days (instant on repeat); a Cget_pain_trendHow an app's pain points changed over time: compares two archived analyses and labels each theme new / resolved / rising / falling / stable with share deltas (percentage points). Instant (archive read, no LLM). Default: latest vs ~30 days earlier. Returns a note when the app has get_app_detailsApp metadata: name, developer, category, price, average rating, rating count and 1-5★ histogram (when available).get_version_historyPer-version review stats (review count, average rating, first/last seen) — spot a rating crash right after a bad release. Android: aggregated from recent reviews. iOS: current version + release notes.watch_competitorsContinuous competitor monitoring (paid plans: Starter 2 apps weekly, Pro 15 apps daily). Manage the watchlist and the alert destination; digests of NEW 1-2★ reviews and NEW/RISING pain points are pushed to a Slack / Discord / any https webhook. action: list | add | remove | set_wget_app_reviewsFetch raw app reviews (unified schema across stores: rating/title/body/version/date/devReply/thumbsUp), 50 per page. Use for drill-down after mine_app_pain_points.Link
https://app-pain-api.quiet-delta.workers.dev/mcpQuestions about App Pain API in Muse
How do I connect App Pain API to Muse?
Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use App Pain API to help me. It is a free service with an MCP server at https://app-pain-api.quiet-delta.workers.dev/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
Is App Pain API working right now?
At the last check (October 29, 2026, 21:31 UTC) the endpoint was working, answering in 89ms. It is checked every 15 minutes.
Is App Pain API safe to connect to Muse?
It was screened on October 29, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
What can App Pain API do in Muse?
It exposes 7 tools, including search_apps, mine_app_pain_points, get_pain_trend, get_app_details. For example, you could ask Muse: "Show me the top complaints users have about Spotify and how they've changed in the last month."
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This listing was added from public sources (Found in the official MCP Registry (io.github.apppainapi/app-pain-api)). If you build App Pain API, claim it to correct the details and get your badge.
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