Private and Secure. Always.
Privacy-first software from Germany — open standards, open-weight AI,
no tracking, no data mining, no compromises.
Website · Web App · Docs · Downloads · Blog · Status
Small, focused tools that respect the user. No tracking, no profiling, no closed AI black boxes. Everything we ship is auditable: open-source clients, transparent infrastructure, and open-weight models only — operated from Germany under EU law.
Private AI that actually belongs to you. Chat, write, code, research, and generate images — powered entirely by transparent open-weight models (DeepSeek, Kimi, Qwen, Z.AI, MiniMax, Mistral) via OpenRouter.
- End-to-end encrypted — chats are encrypted client-side with AES-256-GCM before they ever leave your device. Zero-knowledge backend: we can't read them, even if the server is compromised.
- Cross-platform — one Flutter codebase for Android, iOS, Linux, macOS, Windows, and Web.
- Real tools, not just text — web search, live charts, maps, weather cards, image generation, Spotify, calendar & reminders, all rendered inline.
- One clear price — a simple monthly subscription covers platform access and AI credits. No token stress, no upsells.
| Repository | What it is |
|---|---|
| chuk_chat | App source — Flutter client, client-side encryption, tool-calling engine |
| chuk-chat-docs | Technical documentation & architecture |
| chuk_chat_model_list | Curated registry of open-weight models available on chuk.chat |
| chuk_chat_releases | Binary releases — APK, DEB, AppImage, DMG, EXE |
| chuk.chat | Website source |
Try the web app · Pricing · OpenRouter usage stats — aggregate token totals and models are publicly visible, zero personal data.
| Project | What it is |
|---|---|
| chukmail | Material Design IMAP email client for Android — FOSS, no Google Play Services, no telemetry |
| plauder | WhisperFlow-style voice dictation for Linux — Groq Whisper + LLM formatting, Tauri + React GUI |
| plauder-android | Voice-to-text overlay for Android — press and hold to record, release to transcribe via Groq Whisper |
| session.txt | Auto-log Claude Code & Codex resume commands into a per-folder session.txt — never lose a session |
| canon-gps-connect | Flutter app cloning Canon Camera Connect's live GPS geotagging — pair once over BLE, a background service streams your phone's location so the camera writes GPS into each photo's EXIF as you shoot. BLE protocol reverse-engineered from the official APK |
| Besser-Bahn | The better Deutsche Bahn app for frequent travellers — journey search, live departures, train runs on the map, self-hosted delay & connection prediction, Träwelling check-ins, and cheaper split-ticket finding. Privacy-first: no tracking, no ads, no forced account |
OpenRouter (model routing) · Brave Search (private web search) · Supabase (database & auth) · Stripe (payments) · Hetzner (EU-based hosting) · Groq (speech-to-text) · Black Forest Labs (image generation) · CoinGecko (market data)
- Privacy by architecture, not by promise. Encryption happens on the device. Servers can't read what they don't hold the keys to.
- Open weights only. DeepSeek, Qwen, Mistral, Kimi and other auditable models — never closed-source LLMs. You always know what's running your AI.
- No tracking. No analytics SDKs, no fingerprinting, no behavioural profiles. A tool, not a marketing funnel.
- One clear price. Subscriptions cover infrastructure and AI credits. No upsells, no ads, no data brokering.
- Boring tech, audited code. Flutter, Supabase, Postgres, standard cryptography. Nothing exotic in the security path.
- Made in Germany, GDPR by design. Operated under EU law — your data stays yours: fully deletable, fully controllable.
- Website: chuk.chat · chuk.dev
- Status: status.chuk.chat
- Support: chuk.chat/en/support
- Privacy policy: chuk.chat/en/privacy