launch-check kit · in testing
Check it works before your users do.
Plain-English checks and fix prompts for apps built with Lovable, Bolt, v0, Replit or Cursor on Supabase. No coding needed.
Join the kit waitlist
free to join · $39 when it ships
Can’t wait? Get 5 checks free
It worked in the preview. Then real users showed up.
- The confirmation link opens a blank page.
- It works in the builder and breaks once it's live.
- Refreshing a page shows a 404.
- Every AI fix breaks three other things.
- You're not sure who can read your database.
What's in the kit.
- 24 launch checksSteps, the result to expect, what to do if it fails.
- 12 fix promptsPaste them into your builder's chat.
- Error decoder10 common errors in plain English.
- Git safety netGo back to a saved checkpoint after a bad fix.
- Tracker and bug reportLog results, hand off bugs.
- When to stopSigns that prompting is making it worse.
Four areas, six checks each.
Login
Can people sign up and stay in?
- Sign up
- Email link
- Log back in
- Refresh
- Password reset
- Logged-out access
Data
Does it save, and stay private?
- Create
- Refresh
- Edit
- Delete
- Other users' data
- Shared links
Live site
Does it work outside the preview?
- Fresh browser
- Deep links
- Main task
- Phone
- Login links
- Latest version
Failures
Does it fail politely?
- Empty fields
- Double click
- Slow internet
- Error messages
- Test payments
- Retest
outlinedin the free 5-check sample
Nothing ships untested.
- 1Break a demo app
- 2Run every check
- 3Ship what passes
Tested in Lovable and Cursor. Anything that fails is cut, and this page will show the real counts.
Built it with AI? This is for you.
for you if
- You built it with AI
- You can't read most of the code
- You're launching soon, or just did
not for you if
- Your app is already live: scan it first
- You're an experienced developer
It finds common problems and helps you fix them.
- Find and document what's broken
- Fix the usual bugs with tested prompts
- Go back when a fix makes things worse
- Not a security audit. Passing every check doesn't mean your app is secure.
Everything I check first, written down.
Full-stack developer on Next.js and Supabase. Built the FixedLaunch Scan.
Get it when it ships
Join the kit waitlist
free to join · $39 when it ships
Scan it first. The score is free.
Paste your link and get a score in seconds. Every fix as a prompt for your builder is $9, one-time.