WHITTL
A Python development environment with built-in AI assistance, one-click builds for Windows and Linux (plus experimental Android APK support), and a full-featured code editor. Write code, generate code, or both.
DEVELOPMENT TOOLS
- Code editor with syntax highlighting, AST-powered code folding, autocomplete, and bracket auto-pairing
- Real-time error detection (pyflakes) with inline error indicators
- Multi-file project management with tabbed editing and line count tracking
- Smart file routing — keyword search + AI selects the right files in large projects
- One-click builds — Windows .exe, Linux AppImage, Android APK, and setup installers
- Explain mode — highlight any code and get a plain-English explanation
- Undo/history — roll back bad generations to any previous state
- Multi-file search across your entire project
- Auto-update check — get notified when a new version is available
- Real .py files on your disk — open in any editor, version with git, own forever
- Works on Windows and Linux
AI ASSISTANCE
- 4 targets — Desktop (PySide6), Mobile (Flet), Basic (CustomTkinter), or General Python (CLI tools, scripts, plugins)
- Conversational AI — ask questions, get explanations, iterate on your code through chat
- 5 AI backends — Claude, DeepSeek, Gemini, OpenRouter (200+ models), or fully offline with Ollama
- Smart editing — the AI changes only the lines that need to change, dramatically faster and cheaper than rewriting whole files
- Self-healing autofix — when your app crashes, the AI reads the traceback and iterates on fixes automatically, up to 10 rounds until it works
- Built-in cost cache — multi-round conversations reuse context so your API bill stays small
- 150+ auto-fix rules catch common mistakes — hallucinated APIs, deprecated patterns, missing imports
- Context memory — the AI remembers your earlier conversation instead of forgetting after a few messages
- Bring your own API key — no middleman markup, no message limits, no monthly quotas
MOBILE BUILDS EXPERIMENTAL
Mobile APK builds are currently experimental. They work but may need troubleshooting on some devices. Desktop builds (Windows/Linux) are stable and production-ready.
- Build Android APKs with one click — no Android Studio, no Java, no Gradle
- Device format selector — Phone, Tablet, or custom dimensions
- One-click install to device via USB
- Pure Python APK signing — all build tools downloaded automatically
SCREENSHOTS
MOBILE APP OUTPUT
Phone — Recipe App
Tablet — Same App
DEMO
HOW IT WORKS
1. Start a new project or import existing Python code
2. Write code in the editor, or describe what you want and let AI generate it
3. Use the AI chat to ask questions, explain code, or iterate on changes
4. Run and test directly inside Whittl with built-in error detection
5. Build to .exe, AppImage, or Android APK with one click
What's New in v2.2.0
- Faster Edits — The AI now changes only the lines that need to change instead of rewriting entire files. A theme color change that used to take 83 seconds now finishes in 10-15 seconds.
- Much Lower AI Costs — Modifications use 40-75% fewer tokens, up to 97% on large files. Claude sessions get a built-in cost cache that cuts another ~87% off multi-round conversations. Bring-your-own API key budgets go a lot further.
- Autofix Actually Iterates Now — When your app crashes, the AI tries edit, run, see the error, edit again — up to 10 rounds until the code works. Runs in the background so the app stays responsive. Same workflow, dramatically higher fix rate.
- Smarter Request Understanding — Polite questions like "can you add dark theme?" now correctly trigger a code change, not just an explanation. Removed dozens of misclassification bugs that routed edits to the wrong pipeline.
- CustomTkinter Works on Windows — Generated CustomTkinter apps previously crashed at launch because tkinter was missing from the bundled Windows Python. Fixed. Existing users auto-upgrade on next launch with a one-time 30MB download.
- API Keys Safer on Disk — OpenRouter keys are now encrypted at rest, matching the other backends. Added extra protection against AI-generated code trying to read or write files outside your project folder.
- Quick Test Polish — The test-run window shows "TESTING" in the title bar so you know it's not a production launch. Qt apps no longer flash a visible window during the quick test.
- Helpful Tool Errors — When the AI makes a typo in a filename or targets a line that doesn't exist, it now gets a suggestion ("Did you mean ui/settings.py?") and self-corrects in one round instead of going in circles.
- Better Build Pipeline — Smaller installers, cleaner startup, fewer spurious "module not found" errors in multi-file projects. SQLite bugs that used to slip through the pre-flight autofix now get caught.
FAQ
Is Whittl a one-time purchase?
Yes. $20 CAD one-time with no subscription, no message limits, and no monthly fees.
What AI providers does Whittl support?
Claude, Gemini, DeepSeek, OpenRouter (200+ models including free ones), and Ollama for fully offline use. Bring your own API key.
Can Whittl build Android apps?
Yes, though Android builds are currently experimental. One-click APK builds with no Android Studio or Java required. Desktop builds are stable and production-ready.
Do I own the code Whittl generates?
Yes. All code is saved as real .py files on disk. Open in any editor, version with git, own forever.
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