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Ask the questions you keep to yourself

A free, private AI chat app that runs entirely on your phone

Download on the App StoreGet it on Google Play

What can you actually do with it?

Chat with documents

"I need the answer that’s buried in this PDF..."

Attach a PDF, TXT, Markdown, HTML or CSV file and ask about it. Retrieval and embeddings run on-device, and every answer links back to the passage it came from, so you can check the source.

Web search

"This needs something newer than the model knows..."

A local model’s knowledge stops at its training cutoff, which is fine until you ask about this week. Private Mind pulls results from the web and reasons over them on your device, at the moments you decide it should.

Local speech-to-text

"Let me just say it out loud..."

Dictate a message and Whisper transcribes it on the phone itself. The model does the work instead of a transcription service, so what you say goes straight into the chat and nowhere else.

Customizable prompts

"Answer the way I actually work..."

Save system prompts as reusable presets and give each model its own default. One preset can be a blunt code reviewer that skips the preamble, another a patient tutor that explains fractions to your kid.

Supported AI models

Liquid AI
Qwen
Gemma

Frequently Asked Questions

Yes. Once a model is downloaded, Private Mind runs entirely offline, including chat, document questions and speech-to-text. A connection is needed for the initial model download and for optional web search, and the rest works in airplane mode.

We are Software Mansion

We create award-winning mobile apps, real-time multimedia products, and AI solutions. Private Mind is based on our own technologies: React Native ExecuTorch, React Native RAG, Reanimated and Audio API.

If you'd like to introduce on-device AI models to your own app, make sure to let us know—we can help you with this whole journey from the very beginning.