SQLPrep is a local-first SQL practice app for interview preparation — 200 interview questions and 60 SQLite exercises, all on your device.
Questions, bug reports, or corrections to a question in the bank? Email us and we read every message:
How do I unlock the full library? — Tap any locked question or the Unlock button; it's a one-time $12.99 purchase, no subscription.
I paid but the app still looks locked. — Open Settings and tap "Restore Purchases", or reinstall and restore. Still stuck? Email us.
Does it work offline / without an account? — Yes. Everything runs locally; no account, no login, no data collected.
I found a wrong answer or typo. — Tap "Report this question" inside the app, or email us the question ID.
See the Privacy Policy. Short version: we collect nothing.