CS++ Java IDE

Code Java on iPhone & iPad

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Now universal — runs on iPhone and iPad. Write Java, run instantly, work through 11 AP CSA units offline. No accounts, no ads, no tracking. CS++ Java IDE is a focused, offline Java environment for students learning to code — and a complete AP Computer Science A practice platform. Write code in a real Java IDE designed for touch. Run programs instantly with the bundled Java runtime — no internet, no compiler setup, no accounts. Tap Run and your code executes on your device. WHAT'S INCLUDED • Multi-file Java editor with syntax highlighting, line numbers, auto-indent, and a templates menu • Bundled Java runtime — runs your code locally, even on airplane mode • Unit 1 free: 11 hand-picked starter problems covering primitive types, output, and your first algorithm • Full AP CSA course (one-time $9.99 unlock): 11 units, 50+ inline coding challenges, persistent progress • Pseudocode-to-Java translator for AP CSP students stepping up • System.out.println, Scanner input, exceptions, ArrayLists, classes, inheritance — every topic in the AP CSA Java subset DESIGNED FOR LEARNING • Each challenge tests your output against expected results • Inline error messages with the exact line and what went wrong • "Format" button cleans up indentation in one tap • Templates dropdown loads common patterns: Scanner input, file reading, ArrayList traversal, recursion • Progress saved on-device — pick up where you left off UNIVERSAL Built for iPhone and iPad. The editor and console scale from 4-inch phones to 13-inch iPads, with a full-bleed editor on phones to maximize coding space. OFFLINE-FIRST No account creation. No login. No data sent off your device. Lessons, code, and progress all live in the app's local storage. Use it on a flight, in a classroom with no Wi-Fi, or anywhere. THE FULL AP CSA COURSE Unlock all 11 units for $9.99 (one-time, no subscription): 1. Primitive Types & Output 2. Booleans & Conditionals 3. Iteration 4. Strings 5. Arrays 6. 2D Arrays 7. ArrayList 8. Recursion 9. Classes & Objects 10. Inheritance & Polymorphism 11. Searching & Sorting Built by Yellow Dart Publishing for csplusplus.com — the College Board–aligned CS curriculum used by teachers across the U.S.

Ratings & Reviews

  • 5.0
    out of 5
    1 Ratings

The developer, Kevin Hare, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • Kevin Hare
    Size
    • 19.5 MB
    Category
    • Education
    Compatibility
    Requires iOS 15.0 or later.
    • iPhone
      Requires iOS 15.0 or later.
    • iPad
      Requires iPadOS 15.0 or later.
    • iPod touch
      Requires iOS 15.0 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    Languages
    • English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • © 2026 Yellow Dart Publishing
  • Developer Website
  • Privacy Policy

    • More by Kevin Hare