On-device Android copilot that turns natural language into real device actions
An AI agent with its own cloud and wallet
Stage
Not given
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Founded
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Based in
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US
Pricing model
Free
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Pricing
Not given
Free: $0 forever with your own API keys. Pro: $20 per month with $20 of hosted credit a month (or $240 at once on yearly, save up to 17%). Team: $18 per seat, monthly, 2 to 5 people, with $18 of shared credit per seat monthly. Compute costs about $6 per GB a month from credit, charged by the second.
Key features
100+ device tools and actions
On-device processing with no cloud data transmission
Monitor mode with 40+ read-only tools
Operator mode with full automation across 100+ tools
Voice control via Assistive Ball
Support for local and cloud LLM models
Dual safety modes with explicit permissions
Visual ring indicators for foreground and background operations
Four-tier permission system
Accessible from any app via floating Assistive Ball
Real files, real commands, web access, and browser beside the chat
Memory written to disk as plain text you can edit and delete
Auto mode with safe judgment on your own model
Delegate work to helper agents sharing a task list
Chat apps: Telegram, Discord and Slack integration
Support for MCP servers, plugins and IDE integration
Cloud tasks that keep running after you close the app
Services that stay online with scheduler, webhook and watcher
Web apps with their own live link at letronna.si
What makes it different
Only on-device AI copilot that controls entire Android phone without sending personal data to cloud
100+ device automation tools in single app, including screen automation and system control
Works with any OpenAI-compatible model, local or cloud
No Play Store restrictions: full device control without limitations
Runs locally with your own keys; nothing leaves your machine unless you connect a hosted model
Starts in 7.65 ms with 84% on Harness-Bench
Plain text memory files you can edit, not a black box
Works with any model: OpenAI-compatible, Anthropic, Ollama, llama.cpp or hosted
Pay only for hosted models and cloud compute, not per seat
Gotcha
Letronna®