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SQL Practice: Learn Database

by Marton Greber

  • Developer Tools
  • Free
  • Small & simple · 83
View on the App Store
Rating
4.7
145 ratings · US storefront
Top 75%among 64 Developer Tools apps
Last update
Jul 30, 2026
Version 2.0.0
Size
50 MB
Category
Developer Tools
Tracked since
Oct 9, 2026

Estimated revenue

A model estimate with a likely range, not a reported figure.

No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.

How this estimate is made

Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.

Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.

Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.

Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.

Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.

Full method

Screenshots

As shown on the App Store listing.

About this app

Text from the App Store listing.

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

SQL Practice turns idle moments into practical data skills. With interactive exercises, realistic datasets, and instant feedback, you’ll build SQL confidence from beginner fundamentals to interview-ready skills.

Who it’s for:

  • Career changers entering tech
  • Professionals adding SQL to their toolkit
  • Students preparing for technical interviews
  • Anyone curious about data and databases

Why it’s different:

  • Learn by doing: write and run real SQL queries
  • SQL Patterns (Pro): understand reusable approaches instead of memorizing answers
  • Database Bits (Pro): build intuition with short, visual lessons
  • Smarter feedback (Pro): see why your result differs from the expected output
  • Progressive curriculum: start with the fundamentals and advance at your own pace
  • Mobile-first design: practice whenever you have a few spare minutes

When you get stuck:
With Pro, SQL Practice helps you move forward without immediately giving away the answer. Use progressive hints, compare your results with the expected output, and explore SQL X-Ray explanations that break queries into understandable steps.

What you’ll learn:

  • SELECT, WHERE, ORDER BY, and filtering
  • JOINs and relationships between tables
  • COUNT, SUM, AVG, GROUP BY, and HAVING
  • Subqueries and advanced query techniques
  • Reusable SQL patterns (Pro)
  • Core database concepts, indexes, and data design (Pro)

Practice your way:

  • Guided SQL lessons
  • Easy, medium, and hard exercises
  • Quick drills
  • Short visual database lessons (Pro)
  • Daily practice challenges
  • Streaks, XP, achievements, and progress tracking
  • Hardcore mode: turn off the advanced SQL keyboard and solve the toughest challenges without assistance—the highest level of SQL practice.

Free and Pro:
Core SQL lessons, exercises, drills, streaks, and basic progress tracking are free.

An optional auto-renewing Pro subscription unlocks SQL Patterns, Database Bits, progressive hints, detailed result comparisons, and SQL X-Ray step-by-step explanations. Available plans, billing periods, trial eligibility, and localized prices are shown before purchase. No purchase is required to use the core learning and practice features.

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

What’s new

Release notes for the latest version, as written by the developer.

v2.0.0

SQL Practice 2.0 is here—our biggest learning update yet!

New with an optional Pro subscription:

  • Practice reusable queries with SQL Patterns
  • Explore database concepts with visual Database Bits
  • Get progressive hints and clearer result comparisons
  • Break down queries step by step with SQL X-Ray

Core SQL lessons, exercises, and drills remain free.

Rank history

Daily position in the Liberia charts. #1 is at the top.

Best rank
#6
Current rank
#10
Days charting
3 of 7

On the charts today

Small & simple score

How realistic it is for a small team to build something like this.

83/100

Small & simple

  • Developer size70% · 25

    Developer: 2 apps on the charts

  • Audience size100% · 20

    Ratings: 145

  • App size60% · 10

    Size: 50 MB

  • Price model80% · 15

    Price model: free with in-app purchases

  • Demand proof90% · 30

    Best rank #6, 46 countries

An indicator, not a fact. We can't see team size. Calculated Oct 24, 2026 · method i2

How the score works

Version history

  • 2.0.0LatestReleased Jul 30, 2026