Review Miner

review-miner-mcp

Find out what users hate about your competitors. An MCP server that mines public App Store and Steam reviews so Claude (or any MCP client) can turn thousands of complaints into product opportunities.

No API keys. No scraping. One line to install.

You:    What do users hate about the top health & fitness apps in Turkey?
Claude: [review_top_apps → review_compare_apps]
        • Strava: the most upvoted complaints ask for Turkish. "I was going to buy
          Premium but I'm deleting it because there is no Turkish support."
        • OKOK (smart scale): 61% of recent reviews are negative. You have to watch
          ads before the app shows your own weight.
        • MAC+: login and verification-code errors ("hata veriyor") dominate.
        • HUAWEI Health: can't log in after switching phones or after updates.

_{Summarized from real tool output: Turkish App Store, 1 Oct 2026, 150 recent reviews per app.}

Why

You want to know	Without it	With review-miner
Why an app's rating dropped	Scroll reviews by hand	rating_by_version shows which update broke it
What a whole category fails at	Read 5 apps × 500 reviews	One call compares them side by side
Whether an idea has demand	Guess	Real complaints, with quotes and counts

How it works

flowchart LR
    C[Claude / MCP client] -->|tool call| S[review-miner-mcp]
    S --> A[Apple iTunes Search + RSS]
    S --> T[Steam Store + Web API]
    S --> X[Stats: rating mix, per-version rating,<br/>top complaint phrases]
    X -->|compact summary + best review samples| C

The server does the cheap, deterministic part (fetching, counting, phrase extraction). The model does the interpretation. Only the most helpful review texts are returned, so your context window is not flooded.

Install

Requires uv.

Claude Code

claude mcp add review-miner -- uvx review-miner-mcp

Claude Desktop / Cursor (claude_desktop_config.json / .cursor/mcp.json)

{
  "mcpServers": {
    "review-miner": {
      "command": "uvx",
      "args": ["review-miner-mcp"]
    }
  }
}

Tools

Tool	What it does
review_top_apps	Current top charts: App Store by category (free / paid / grossing) or Steam weekly top sellers / most played / new releases
review_search_apps	Find an app or game and get its ID
review_fetch	Recent reviews for one app: rating mix, rating per version, top complaint phrases, most helpful texts
review_compare_apps	2–8 competitors side by side, App Store and Steam mixed

Prompts: find_opportunities (category → product gaps), competitor_teardown (one app, love vs hate).

Every tool supports country (e.g. tr, de, us) and response_format (markdown / json).

Try these

• "Compare the reviews of the top 5 finance apps in Turkey. What does every one of them get wrong?"
• "Did Duolingo's latest version lower its rating? Show rating by version."
• "What do negative Steam reviewers of Cyberpunk 2077 complain about, and how many hours had they played?"
• "Run find_opportunities for health-fitness in Germany."

Limits (set by the sources)

• App Store: most recent ~500 reviews per country (Apple's feed limit).
• App Store: Apple's review feed is sometimes empty for an app/country for a while. The server retries equivalent feed URLs automatically; if all are empty it tells you so instead of reporting "no reviews". Retrying a few minutes later or trying another country usually works.
• Steam: most recent reviews, filtered by language (english, turkish, all...).
• Results are cached for 15 minutes; concurrency is capped to stay polite.

Part of the keyless MCP series

Open-source MCP servers that answer one market question each, with public data and no API keys.

Server	Question it answers
review-miner-mcp (this one)	What do users hate about competitor apps and games? (App Store + Steam reviews)
pricing-time-machine-mcp	How did a SaaS pricing page change over the years? (Wayback Machine)
hn-hiring-trends-mcp	Which skills are tech companies hiring for, and which are rising? (HN Who is hiring)
model-price-radar-mcp	What does each LLM cost, and did it get cheaper? (OpenRouter + price history)
launch-detector-mcp	What is a company about to launch? (certificate transparency logs)

Development

uv sync --extra dev
uv run pytest                          # offline tests with mocked APIs
uv run python scripts/smoke_live.py    # live check against Apple and Steam
npx @modelcontextprotocol/inspector uv run review-miner-mcp   # click-through UI
uv run --with rich python scripts/demo.py finance tr        # terminal demo (vhs docs/demo.tape records the GIF)

MIT © Ali Altunar