Twiddle Chat

Twiddle Chat is a mobile chat app for people who want to use their own API keys. No in-app subscription: you bring your own keys and keep full control over cost and privacy (provider terms apply).

Bring your own keys (BYOK) Use your own API keys for Gemini, OpenAI, OpenRouter, and Anthropic—no in-app subscription. You keep full control over costs, pay only what you use with your provider, and benefit from a more privacy-friendly setup (your data goes only to the providers you choose; each provider’s terms and conditions apply).

Chat with multiple AI providers Choose from Wikipedia (no API key needed), Gemini, OpenAI, OpenRouter, and Anthropic. Add your API keys in Settings and pick your favourite models. Model selection and favourites sync across devices.

Familiar chat experience Send messages and get streaming replies. Tap bold words in replies to ask follow-up questions. Optional system prompt and reasoning toggle. Copy or regenerate responses, export conversations as text, and manage chats: rename or delete them. Stop generation anytime.

Wikipedia built in Search Wikipedia and read summaries. Tap search results or highlighted terms to dive deeper. Single-article answers include a “View on Wikipedia” link. Sync and control Conversations and settings (model, system prompt, API keys) sync via iCloud. Your keys stay on your devices; the app talks directly to provider APIs.