SQL Practice: Learn Database

Marton Greber

About this app

Learn SQL in 15-minute daily sessions — on your phone, anywhere.

SQL Practice turns idle moments into practical data-skills training. With interactive exercises, real-world datasets, and instant feedback, you’ll build SQL confidence from beginner basics to interview-ready skills — right on your phone.

Who it’s for:
- Career changers entering tech
- Professionals adding SQL to their toolkit
- Students prepping for technical interviews
- Anyone curious about data and databases

Why it’s different:
- Real data: practice on realistic scenarios
- Progressive curriculum: start simple, build toward complex queries
- Mobile-first design: learn anywhere, anytime
- Understand mistakes and improve fast
- Gamified progress: streaks, XP, and achievements to stay consistent

What you’ll master:
- SELECT, WHERE, and filtering
- JOINs and relational queries
- Aggregations (COUNT, SUM, AVG…)
- Subqueries and advanced techniques
- Core database design concepts

Stay engaged:
- Daily practice challenges
- Targeted drills by topic
- Hardcore mode for power users
- Detailed progress stats
- Achievements

Start your data journey today — no prior coding experience required, just 15 minutes of curiosity.

Privacy Policy: https://martongreber.github.io/mvp/privacy.html
Terms of Use: https://martongreber.github.io/mvp/terms.html

Ratings and reviews

This is a fantastic app with various SQL practice questions. There's even an "AI" button. once clicked, it will generate a prompt for you to paste into AI to help explain the query if you're getting stuck. I'm a newbie and really loving the app! Some explanations are a little "light" but the AI button will generate a prompt you can paste to get further in-depth explanations. I can't fault it. 👏👏 Highly recommend!!

i appreciate this app so much!! as a beginner with only the RDBMS knowledge in mind, It's easy for me to learn SQL step by step since this app teaches me the basic principles of SQL thru my phone only (since i had no laptop to try it on) and as a person struggling with focus and concentration, this helps me read and understand the lesson easily.

Overall, the app is beginner-friendly and helps you understand the fundamentals of SQL. My only criticism is that window function queries don’t seem to work, even when written correctly.

What's new

This update includes bug fixes, small performance improvements, and new tweaks to keep your daily SQL practice more engaging!