UnboundChat: Private AI (BYOK)

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In-app purchases

About this app

UnboundChat — private AI, on your terms

UnboundChat is a privacy-first AI chat app for Android, Windows and Linux. Bring your own API keys, talk to hundreds of models through OpenRouter or directly to OpenAI, Google and others, and keep every conversation on your device unless you decide otherwise.

Your data, your rules
• Conversations live in an encrypted local database on your device
• Optional cloud sync and backups are encrypted on your device before anything leaves it; nobody but you can read them
• Timed chat retention, one-tap history wipe, and a separate account deletion that erases everything server-side
• No tracking, no ad SDKs, and analytics you can switch off completely

Hermes: your own AI agent, in your pocket
Run your assistant on your own computer and chat with it from your phone. Hermes relays messages, files, voice notes and tool activity between the two over an end-to-end encrypted channel. Ask it to read a document, check a website or run a task, and get the result as a normal chat message, with notifications when it replies. Your agent, your machine, your data.

Any model, no lock-in
• 300+ models through OpenRouter, plus direct OpenAI and Google connections
• Reasoning models with expandable thinking steps
• Vision: send photos, screenshots and PDFs
• Image generation from the same chat
• Switch models per conversation and compare answers

Made for real work
• Voice messages and hands-free input
• Folders, bookmarks and search across your history
• Personas with their own system prompts and settings
• Export any chat as PDF, Markdown, JSON or text
• Available in 31 languages

Pay only for what you use
UnboundChat is a bring-your-own-key app. You pay AI providers directly for what you use, and UnboundChat never marks it up. A limited free tier is included so you can try it without a key.

UnboundChat Pro (optional subscription)
Pro unlocks encrypted cloud sync and Google Drive backups, zero-data-retention mode, app lock, usage statistics, web search, local backups and chat export. Monthly and yearly plans, cancel any time, no surprise charges.

Built for people who care about privacy. No forced accounts. Nothing hidden. No lock-in.