User Radar.
An AI tool for finding your first users. You describe your app. It searches Reddit, Hacker News and Stack Exchange for people complaining about the problem it solves, picks the best 20 posts and writes a reply for each one.
- Platform
- Web
- Year
- 2026
Why I built it
Career Memory Bot was live and nobody was using it. When I want an answer to something, I search Google with "reddit" on the end. People there ask for help all the time. I built a tool to find the ones who needed my app.
How it works
AI writes the search terms. Then Claude reads every post and rates it: how close it is to your problem, how fed up the person is, and whether they're asking for a tool. A formula turns those ratings into a score out of 100. Posts score higher if the person says they'd pay or names a rival app, and lower as they get older.
The replies
Claude writes three versions for each post: a helpful reply, one that mentions your app, and a direct message. Every reply has to mention something from the person's own post. That way it doesn't read like AI spam.
What I learned
It found the people. Getting replies was the hard part. There's so much AI spam now that cold messages get ignored. Each one has to be written for that person. If you send a lot, Reddit blocks you.