SQL Challenge
Entwickler-Tools
2,99 € · Entwickelt für iPad. Nicht für macOS überprüft.
Feed your brain. Query up.
Learn SQL the way you will actually use it: one query at a time, against a real database, right on your phone.
SQL Challenge is a single path of original questions. Each level hands you a small database and asks for one thing, and you answer with one SELECT. A real SQLite engine ships inside the app and runs your query on the spot — no server, no signal, no waiting.
Then it runs your query again on rows you have never seen. Hard-code what was on the screen and you will hear about it. That is the whole difference between a query that looked right and a query that is right.
Free to start: the opening levels are free, then unlock the full path with a single one-time purchase. No subscription, no ads, no account.
WRITE REAL SQL
• A keyboard built for queries: a clause row for SELECT, FROM, WHERE, JOIN, GROUP BY, ORDER BY and the aggregates, and a toggle that upper-cases keywords while leaving your table and column names exactly as typed
• A schema panel above the editor: every table with its columns, their types, the row counts, and the first rows to look at
• A result sheet that puts your table next to the expected one, so you can see which rows are extra, which are missing, and which column came back under the wrong name
FIVE WORLDS TO QUERY
• Five invented databases, none of them borrowed from a tutorial: an online shop, a school, a library system, an airline and a music service
• Hidden variants of the same schema — an empty table, a tie at the top, a NULL where you assumed a number, a row with nothing to join to — decide whether you answered the question or just the screen
LEARN THE RIGHT WAY
• Three tiers of hints from Tuple, a cyan beaver who is smug about engineering and on your side anyway
• A curated solution once you pass: the obvious query, the better one, and why the difference matters
• One path, no shortcuts, easy to hard: filtering and sorting, then joins, grouping and aggregates, then subqueries and common table expressions
STAY MOTIVATED
• XP, player levels, daily streaks and badges
• Six themes, dark and light
PRIVATE BY DESIGN
• Works fully offline; no account, no tracking — your progress stays on your device
• No ads, ever
Bewertungen & Rezensionen
- Diese App hat noch nicht genügend Bewertungen oder Rezensionen erhalten, um eine Übersicht anzuzeigen.
docs/release-notes/1.0.2-en-US.txt
Das Entwicklungsteam, MUSTAFA GURBUZ, hat darauf hingewiesen, dass die Datenschutzrichtlinien der App den unten stehenden Umgang mit Daten einschließen können. Weitere Informationen findest du in den Datenschutzrichtlinien des Entwicklungsteams .
Keine Daten erfasst
Der Entwickler erfasst keine Daten von dieser App.
Bedienungshilfen
Der Entwickler hat noch nicht angegeben, welche Bedienungshilfen diese App unterstützt. Weitere Infos
Informationen
- Größe
- 13,8 MB
- Kategorie
- Entwickler-Tools
- Kompatibilität
Erfordert iOS 15.0 oder neuer.
- iPhone
Erfordert iOS 15.0 oder neuer. - iPad
Erfordert iPadOS 15.0 oder neuer. - iPod touch
Erfordert iOS 15.0 oder neuer. - Mac
Erfordert macOS 12.0 (oder neuer) und einen Mac mit Apple M1-Chip (oder neuer). - Apple Vision
Erfordert visionOS 1.0 oder neuer.
- iPhone
- Sprachen
- Englisch
- Altersfreigabe
4+
- 4+
- Anbieter
MUSTAFA GURBUZ
- MUSTAFA GURBUZ hat sich nicht als Händler für diese App ausgewiesen. Falls du Verbraucher:in im Europäischen Wirtschaftsraum bist, gelten die Verbraucherrechte nicht für Verträge zwischen dir und dem Anbieter.
- Copyright
- © 2026 Mustafa Gürbüz
