Fa - AI Agent TestFlight Beta
Getting Started with the Fa - AI Agent Beta
About Fa - AI Agent
Fa is a personal AI agent that lives on your phone and your Mac. Chat with any OpenAI-compatible provider, run a real sandboxed coding agent, let it build mini-apps for you, and generate images, speech, and music — privacy-first, with your keys in the Keychain.
ANY PROVIDER, YOUR KEYS
- OpenRouter, OpenAI, Anthropic, Google, Ollama — any OpenAI-compatible endpoint
- Add custom providers with your own base URL and models
- On-device models (Gemma, WebLLM) for offline, zero-key chats
- API keys stay in the iOS/macOS Keychain — never in config files, never uploaded
A REAL AGENT, NOT JUST A CHAT
- Fa thinks out loud: watch live reasoning, tool calls, and results
- Sandboxed shell, file system, git, Python, Lua, SQLite, and JavaScript
- Reads, writes, and patches code; searches the web; fetches pages
- Approval tiers keep you in control of every write and command
MINI-APPS ON DEMAND
- Ask Fa to build an app — calculator, maps, notes, trackers — and it appears in your sidebar
- Mini-apps can use your calendar, contacts, HomeKit devices, and Health data (with your permission)
- Keep chatting with Fa right inside the app to refine it
MEDIA GENERATION
- Generate images inline in the chat
- Text-to-speech and music generation with per-slot media models
- Play audio and video right in the conversation
YOUR DATA, YOUR DEVICE
- Privacy-first analytics: no message text, no keys, no file contents — ever
- Sessions stored locally, with optional iCloud sync
- Rename sessions, branch conversations, rewind and checkpoint
WORK THE WAY YOU LIKE
- Dark and light themes, English and Russian UI
- iPhone, iPad, and Mac — one app, one agent
- Free and open source: bring your own key, pay only your provider
Fa is the agent that works for you — on your hardware, under your rules.
