SQLearn vs CS++ Intro to Java

SQLearn teaches SQL the way it actually works — by writing and running queries LEARN Structured lessons cover everything from basic SELECT statements to JOINs, aggregations, window functions, CTEs, and transactions. Lessons end with a short quiz and a direct shortcut into the Playground so you can try what you just learned. PLAYGROUND A SQL editor with syntax highlighting and a keyword toolbar built for iPhone. Write any query, pick a schema, and run it — results appear instantly. Choose from built-in schemas or create your own with custom seed data. EXERCISES Guided tasks built around database schemas. Write your solution, run it, and compare it against the expected result. Stuck? Reveal the model answer and see exactly where your query differed. WHO IS THIS FOR? – Beginners learning SQL from scratch – Anyone who want to refresh or deepen their SQL skills TECHNICAL – Built-in SQLite engine, no dependencies, fully offline – Syntax highlighting and keyword toolbar in the editor – Schema viewer with table structure on demand – Supports iOS 17 and later

CS++ Intro to Java is a complete first programming course for iPhone and iPad — 10 units and 31 lessons that take you from your very first println to 2D arrays, fully offline. Lessons embed 60 runnable Java coding challenges, 63 inline multiple-choice checks, and 22 Parsons problems — all executed on-device by a bundled Java interpreter. No account. No ads. No tracking. No internet required. WHAT'S INCLUDED • 31 lessons across 10 units — from your first program to 2D arrays • 60 runnable coding challenges — write real Java and run it on-device, no JDK, no compile server • 63 inline multiple-choice checks • 22 Parsons problems — drag code blocks into working order • Variables, operators, Strings, conditionals, loops, classes, arrays, ArrayLists, and 2D arrays • Everything works fully offline — progress stays on your device UNIT 1 IS FREE FOREVER Unit 1 — Getting Started with Java (3 lessons) is unlocked at install. Write and run real programs, and decide if the rest is worth $9.99. UNLOCK FULL INTRO TO JAVA — $9.99 ONE-TIME A single in-app purchase unlocks all 10 Intro to Java units (60 coding challenges): Unit 2. Variables & Primitive Types Unit 3. Operators & Expressions Unit 4. Strings & Using Objects Unit 5. Boolean Expressions & Conditionals Unit 6. Loops & Iteration Unit 7. Writing Your Own Classes Unit 8. Arrays Unit 9. ArrayLists Unit 10. 2D Arrays Pay once, keep forever. Restores on any device signed in to the same Apple ID. No subscription. Future content updates included. PRIVACY Everything runs on your device. The app does not require an account, does not collect personal information, does not include analytics or advertising, and does not track you across apps. Your progress stays on your device. See csplusplus.com/privacy for details. WHO IT'S FOR • Complete beginners writing their first line of code • Intro programming students who want practice anywhere, with or without Wi-Fi • Teachers who want a tablet-friendly tool for in-class practice • Anyone headed toward AP Computer Science A — the CS++ AP CSA course picks up right where this one leaves off For the full browser Java IDE, per-unit quizzes, and timed practice exams, visit csplusplus.com.