Gotcha is a fully on-device AI copilot for Android — control your phone with natural language through 100+ device tools, dual safety modes, and voice calls over any app.
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Your phone, on your command. Gotcha is world's first fully on-device AI copilot for Android that turns natural language into real device actions — safely.
Taken from the repository README
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Read the full README ↗The world's first open-source AI copilot for Android — fully on-device, turning natural language into real device actions.
Android 11+ · Bring your own model · No PC, no server, no ADB tether
Most AI assistants talk — Gotcha acts. 🤖
Say "text mom I'm running late", "free up some space", or "what's on my screen?". An LLM reads your request plus live device context, picks from 100+ purpose-built Android tools, executes real actions, and reports back — by text or by voice. 🗣️
Everything runs in one self-contained app on your phone. Bring your own API key (OpenAI, OpenRouter, Groq, or a local llama.cpp / LM Studio / Ollama server) — it's encrypted on-device and never synced — or sign in to Samosa AI and skip the key entirely. 🔑
🎬 Setting up Gotcha on your phone — step by step
Grab the latest .apk from GitHub Releases, then follow the Getting Started Guide — or watch the video walkthrough above. 🛠️
Once installed, Gotcha tells you when a new version is out. About twice a day it downloads update.json from GitHub; the request carries no account or device identifier, though GitHub sees your IP address as with any download. Tapping the notification opens Settings ▸ About, which downloads the APK, checks its SHA-256 and hands it to Android's installer. Turn it off under Settings ▸ Notifications ▸ App updates.
Building from source instead? 👇
./gradlew installDebug
The app opens on Settings — fill in API key, Base URL (including /v1/), and Model name, grant the prompted permissions, and you're live. Full setup notes live in RUNNING.md.
/chat/completions endpoint with tool calling, or Samosa AI for free starter credits.Termux (the F-Droid or GitHub build) gives Gotcha a real Linux user-space
on Android and is reached through the run_termux_command tool, which
runs headlessly under Termux's user id. It is genuinely useful for
package installs, scripts, compilers, Python, git, and the rest of the
long Unix tail — but it is not a server. There is no root, no systemd,
no kernel access, and no persistence between shell calls. Long-running
processes must be backgrounded explicitly; large packages may need a
mirror change on slow networks. The bundled termux_* skills
(termux_operations, termux_repositories, termux_filesystem,
termux_background, termux_proot) enumerate the realistic limits; ask
the assistant to search_skills for termux_operations if anything is
unclear. See docs/termux-setup.md for the
one-time setup walkthrough.
Thanks to the people who try Gotcha builds before release and tell us what breaks:
./gradlew testDebugUnitTest # JVM unit tests (needs a POSIX sh)
./gradlew detekt lintDebug # static analysis — no baselines, everything must pass
[!WARNING] Use Gotcha responsibly and at your own risk. It is driven by LLMs acting autonomously across powerful Android APIs. Models can hallucinate, misread instructions, or fire unexpected tool calls — which can mean data loss or unwanted configuration changes. Start in Monitor mode, prefer a spare device or emulator while evaluating, grant permissions carefully, and keep backups. We assume no liability for any loss or damage incurred through use of Gotcha.