BYOAIK — Bring Your Own AI Key: a directory of AI tools that run on your own API key.

ChatterUI

Open-source Android LLM frontend: run GGUF models on-device or connect with your own OpenAI, Claude or OpenRouter key.

Website Source code

Category:
AI Chat Interfaces
Pricing:
Open Source
Open source:
Yes (AGPL-3.0)
Self-hostable:
No
Local-first:
Yes
Platforms:
Mobile
AI providers (bring your own key):
OpenAI, Anthropic, OpenRouter, Cohere, Ollama, Custom / OpenAI-compatible
API key storage:
Stored locally on device
Key risk level:
LOW
Trust score:
80/100

ChatterUI is a native Android frontend for LLMs, described by its maintainer as supporting bring-your-own-key, local native inference and local network modes. It runs GGUF models fully on-device via llama.cpp, or connects to remote services including OpenAI, Claude, Cohere and OpenRouter, plus self-hosted backends such as Ollama, KoboldCPP and text-generation-webui, using API keys the user enters in-app. Distributed as a free APK from GitHub under AGPL-3.0.

Why this trust score (80/100)

Trust measures how the tool treats your API key and how much of that has been verified. It contains no popularity signal.

  • Key Safety 23/25 — The key is held on your own device.
  • Request Routing 17/20 — Requests go straight from you to the AI provider.
  • Transparency 20/20 — Source is public under AGPL-3.0, so anyone can check how the key is handled.
  • Privacy 11/15 — Local-first: it works without sending your data anywhere.
  • Maintenance 8/10 — Commits within the last six months.
  • Verification Confidence 1/10 — Compiled from public documentation by an AI-assisted pass, not independently confirmed.

What was checked

Verification tier: RESEARCH_ASSISTED — derived from the evidence below, not set by hand.

  • [REPORTED · RESEARCH] This listing was compiled by an AI-assisted research pass over the tool's public website, README and documentation. No person independently confirmed it.
  • [STRONG · SOURCE_SCAN] Supports a local model backend, so it can run with no cloud provider key at all. source
  • [CONFIRMED · SOURCE_SCAN] Most recent commit 2026-04-24 — about 4 month(s) ago. source

How your API key is handled

Your API key is stored locally on your device. Requests are sent directly to the AI provider.

Setup

Open settings, paste your provider API key, choose a model, and start — the key stays on your device.