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Frequently Asked Questions (FAQ)

Got questions? Here are answers to the most common ones.

📱 Installation & Setup

Q: What are the system requirements?

A:

  • Android: 10+ (API 29+)
  • iOS: 14+ (in beta, launching soon)
  • Storage: ~200MB free (base app is 50MB)
  • RAM: 4GB minimum (6GB+ recommended)

Q: How much storage do I need?

A:

  • Base app: 50MB
  • Per language runtime: 150-300MB (download once, use offline)
  • Courses: 20-50MB bundled, more available as downloads

Tip: Delete unused language runtimes to free space (Settings → Languages → Manage).

Q: Does CoderKit work offline?

A:

  • ✅ Offline: Code editor, running Python/Java/C, integrated courses, visualizers
  • ❌ Requires internet: Downloading runtimes, syncing progress, premium course access, GitHub features

Recommendation: Download your language runtime on WiFi, then use offline.

Q: Can I use CoderKit on iPad/Tablet?

A:

  • ✅ Yes! iPad is supported
  • ✅ Larger screen = larger keyboard (more comfortable)
  • ⚠️ Not optimized for landscape yet (coming Q1 2026)

💻 Coding & IDE

Q: The keyboard is too small. How do I make it bigger?

A:

  1. Use landscape mode - Rotate phone sideways for more space
  2. Use iPad/larger device - Naturally larger screen
  3. Settings → Keyboard → Increase size (option available in settings)
  4. Connect Bluetooth keyboard - For full desktop experience

Q: Can I use my own Bluetooth keyboard?

A:

  • ✅ Yes! Full support for external keyboards
  • ✅ Keyboard shortcuts work (Ctrl+C, Ctrl+Z, etc.)
  • ⚠️ Custom CoderKit keyboard disables (you'll use system keyboard)

Q: How do I run code?

A:

  1. Write code in editor
  2. Tap ▶ Run button (top-right)
  3. See output in terminal
  4. If code needs input, terminal shows input field
  5. Tap ⏹ Stop to kill running process

Q: My code is stuck in an infinite loop. How do I stop it?

A:

  • Tap ⏹ Stop button
  • Process terminates immediately
  • Fix your code and run again

Q: Can I create multiple projects?

A:

  • ✅ Yes! Create as many as you want
  • Home screen → ➕ → Create New Project
  • Each project has its own folder with files

Q: Can I import files from my computer?

A:

  1. IDE → Files sidebar → Import
  2. Choose file from device
  3. Select project folder
  4. File added to your project

Q: Can I export/download my code?

A:

  1. Files sidebar → Select file
  2. Tap ⋯ More → Export
  3. File saved to device storage
  4. Share via email, cloud drive, etc.

Q: How do I switch between files?

A:

  • Tap file tab at top of editor (main.py, utils.py, etc.)
  • Or use Files sidebar → tap file name

Q: Can I undo my changes?

A:

  • ✅ Yes! Unlimited undo history
  • Tap UNDO button on keyboard (or Ctrl+Z on Bluetooth keyboard)
  • Redo with REDO button (Ctrl+Y)

🐍 Language & Execution

Q: Which languages are supported?

A:

  • 🐍 Python 3.10
  • ☕ Java 8+
  • 🌐 JavaScript, HTML, CSS
  • 🔧 C, C++
  • 🎯 Go
  • 💎 Groovy, Clojure, SQL, Bash
  • (PHP, Ruby coming Q2 2026)

See supported-languages.md for details on each.

Q: How big are language downloads?

A:

  • Python: ~250MB (includes NumPy, Pandas, Scikit-learn)
  • Java: ~150MB (includes Eclipse Compiler + Android SDK)
  • C/C++: ~200MB (Clang compiler + NDK headers)
  • Go: ~100MB (Go compiler)

Q: Can I run Python scripts with external libraries?

A:

  • ✅ Yes! Pre-installed: NumPy, Pandas, Requests, BeautifulSoup, Flask, Django, etc.
  • ❌ Custom packages require specific versions (limited to Chaquopy mirror)

Q: Does CoderKit support Jupyter Notebooks?

A:

  • ❌ Not yet
  • ✅ Alternative: Interactive Python console (REPL mode) coming Q2 2026
  • 💡 For now: Use CoderKit's Python IDE + visualizers for learning

Q: Can I use NumPy, Pandas, TensorFlow?

A:

  • ✅ NumPy, Pandas, Scikit-learn: Pre-installed, fully supported
  • ⚠️ TensorFlow, PyTorch: Not yet (heavy dependencies, large download)
  • 🔄 Coming: Lighter ML libraries in Q2 2026

Q: Why is my Java compilation slow?

A:

  • Normal behavior (Eclipse Compiler processes code)
  • ~2-5 seconds on first run, faster afterward (caching)
  • Expected on mobile (desktop is still faster)

Q: Can I use Java Swing or JavaFX?

A:

  • ❌ No (requires full GUI framework)
  • ✅ Alternative: Print output to terminal, use web preview for UI

Q: Does CoderKit support async/await in Python?

A:

  • ✅ Yes! Full asyncio support
  • Works for network requests, concurrent tasks
  • Example courses included

📚 Learn Mode

Q: Can I take courses for free?

A:

  • ✅ Free courses: Python 101, Web 101, CS Fundamentals
  • 💰 Premium courses: $5.99–$19.99 per course
  • 📦 Subscriptions: $1.99–$4.99/month for unlimited access

Q: What's the difference between courses and challenges?

A:

  • Courses: Structured learning (explanation → visualizer → practice → challenge)
  • Challenges: Quick problems to test knowledge
  • Recommended: Do courses first, challenges for practice

Q: What happens if I get stuck on a lesson?

A:

  1. Rewatch visualizer - Second viewing often helps
  2. Reread explanation - Look for details you missed
  3. Try easier challenge - Build confidence, come back
  4. Join Discord - Ask the community
  5. Take a break - Sometimes sleep helps you learn better

Q: Can I download courses for offline use?

A:

  • ✅ With subscription: Settings → Courses → Download for Offline
  • ❌ Without subscription: Stream only (requires internet)

Q: How do I track my progress?

A:

  1. Dashboard → See all stats
  2. Per course → Progress bar shows completion %
  3. Streak counter → Days you've coded consecutively
  4. Stats → Total lines typed, problems solved, time spent

Q: Can I sync progress across devices?

A:

  • ✅ Yes! With Full Stack Pro subscription
  • Progress syncs between mobile + VS Code extension
  • Works instantly when connected

Q: What does "Mastery Check" mean?

A:

  • Quiz at end of course to confirm you understand
  • Not graded, just verification
  • Can retake unlimited times

🎁 Pricing & Subscriptions

Q: Is there a free plan?

A:

  • ✅ Absolutely! CoderKit is free forever
  • Limited features: Python + Web + free courses
  • Free plan includes: IDE, limited courses, 1 visualizer

Q: What's included in each subscription?

A:

| Plan | Cost | What's Included | |------|------|-----------------| | Free | $0 | Python + Web IDE, free courses | | Workspace Web | $1.99/mo | Web + JS IDE, all visualizers | | Workspace Enterprise | $3.99/mo | Java, C++, Go, enterprise courses | | Full Stack Pro | $4.99/mo | EVERYTHING, desktop sync |

Note: Annual plans are cheaper (pay 10 months, get 12).

Q: Can I buy individual courses instead of subscribing?

A:

  • ✅ Yes! $5.99–$19.99 per course
  • Lifetime access after purchase
  • No subscription needed for that course

Q: Is there a free trial?

A:

  • ✅ 7-day free trial for all subscriptions
  • No credit card required
  • Cancel anytime before trial ends

Q: What's the refund policy?

A:

  • ✅ 30-day money-back guarantee on courses
  • ✅ 7-day refund on subscriptions (during trial)
  • Email support@coderkit.app to request refund

Q: Do prices vary by country?

A:

  • ✅ Yes, adjusted for local purchasing power (Play Store pricing)
  • India: ₹50/mo for Workspace Web
  • Brazil: R$9.90/mo
  • See Play Store for your region

🚨 Troubleshooting

Q: My code won't run. What should I check?

A:

  1. Syntax errors? Look for red underlines
  2. Language installed? Settings → Languages → Check if downloaded
  3. Correct runtime? Running Python code? Make sure Python is selected
  4. Try simpler code? Start with Hello World to test
  5. Restart app? Close completely, reopen

Q: Language download keeps failing. What's wrong?

A:

  1. Internet connection? Use WiFi, not cellular
  2. Storage? Check if you have 200MB+ free space
  3. Server down? Rare, but try again later (1 hour)
  4. Try manual download: Settings → Languages → Retry

Q: App crashes when I run code. Why?

A:

  1. Memory limit? Close other apps
  2. Infinite loop? Tap Stop before it crashes
  3. Large file? Split input into smaller chunks
  4. Corrupted runtime? Reinstall language (Settings → Languages → Uninstall → Reinstall)

Q: My progress isn't syncing. How do I fix?

A:

  1. Internet connected? Check WiFi/cellular
  2. Logged in? Make sure you're signed in
  3. Manual sync: Settings → Profile → Sync Now
  4. Clear cache: Settings → Storage → Clear Cache → Restart app

Q: I forgot my password. How do I reset it?

A:

  1. Tap Sign In on home screen
  2. Tap Forgot Password?
  3. Enter email
  4. Click link in email
  5. Set new password

Q: How do I delete my account?

A:

  1. Settings → Profile → Account Settings
  2. Scroll to Danger Zone
  3. Tap Delete Account
  4. Confirm (irreversible!)

Q: The custom keyboard is annoying me. Can I use the system keyboard?

A:

  • ❌ Custom keyboard is core feature
  • ✅ Alternative: Use Bluetooth keyboard (disables custom keyboard)
  • 💡 Pro tip: Keyboard gets easier after 30 minutes of use

Q: Can I use CoderKit on a Chromebook?

A:

  • ✅ Android app on Chrome OS (Google Play Store)
  • ✅ VS Code extension on Chromebook (full desktop experience)
  • Recommend: VS Code extension for better experience

🔒 Privacy & Security

Q: Is my code private?

A:

  • ✅ Yes! Only you can see your code
  • ✅ Server-side encryption
  • ✅ We don't analyze or resell your code

Q: What data do you collect?

A:

  • ✅ Stored: Email, username, progress stats
  • ❌ Never: Password (Firebase hashes it), payment info
  • ❌ Never: Code content (unless you explicitly share)

Q: Can I see CoderKit's privacy policy?

A:

👥 Community & Support

Q: How do I join the community Discord?

A:

Q: How do I report a bug?

A:

  1. In-app: Settings → Help → Report Bug
  2. Email: bugs@coderkit.app
  3. GitHub: github.com/codelab/issues

Q: How do I request a feature?

A:

  1. Discord: #feature-requests channel
  2. Email: feedback@coderkit.app
  3. In-app: Settings → Help → Suggest Feature

Q: Who do I contact for urgent issues?

A:

  • Email: support@coderkit.app
  • Response time: 24-48 hours
  • Include: Device model, app version, error screenshot

🌟 Tips & Tricks

Q: How do I type faster on the custom keyboard?

A:

  • Swipe letters instead of tapping (gesture typing)
  • Long-press for variants (a → á, à, ä)
  • Double-tap SPACE for period (.)
  • Double-tap SHIFT for CAPS LOCK

Q: How do I make the editor text larger?

A:

  1. Settings → Appearance → Font Size
  2. Slide to increase
  3. Changes apply immediately

Q: Can I use custom themes?

A:

  • ✅ Light Mode (white background)
  • ✅ Dark Mode (black background, better for eyes)
  • 🔄 Custom themes coming Q2 2026 (user-created themes)

Q: How do I see the error in my code?

A:

  1. Red underline = error location
  2. Tap red underline → see error message
  3. Read message carefully (usually tells you the fix)
  4. Fix and run again

Q: Can I use emojis in my code?

A:

  • ✅ Python: Yes, variable names can have emojis
  • ❌ Java: No (not valid Java syntax)
  • ✅ JavaScript: Strings can include emojis
  • ℹ️ Note: Not recommended (sticks to ASCII for compatibility)

📞 Still Have Questions?

We're here to help! Don't hesitate to reach out. 💬