Free checks for AI-built apps
Three free tools for anyone running an app built with Lovable, Bolt, v0 or Replit: find out why it is broken, whether a key is safe to expose, and which of your variables reach the browser. No signup.
- Broken-app check
Why is my app broken?
Reads your published app the way a visitor would and names the most likely cause, with the evidence behind it.
Reads your published page · no access to your code
- Key checker
Is this key safe to expose?
Tells you whether a key is meant to be public or must never leave your server. Decoded in your browser.
Runs in your browser · nothing is sent anywhere
- Variable checker
Which variables reach the browser?
Shows which of your environment variables your framework bakes into the public bundle, and which stay server-side.
Runs in your browser · nothing is sent anywhere
Finding it is the easy half
Plenty of tools will tell you something is wrong with your app. Almost none of them will change it — you are handed a report and left to find someone who can act on it, which for an AI-built app usually means a week and a couple of thousand dollars.
These checks are free and need no account because the answer is not the valuable part. Refinar is what happens next: it reads your repository, makes the change, and says out loud which changes a person should approve before they ship.
Not sure which check you need? Start from the symptom.