Russet - Offline & Private AI App - App Store

4 min read Original article ↗

Offline, private, on-device AI

Free

The flexible, on-device processing of Apple Intelligence meets OpenAI's powerful AI models in a new kind of AI companion. Russet is your private, customizable, and portable AI companion powered by Apple Intelligence. All chats run fully on-device by default. If you enable a cloud model using your own API key, your requests are sent directly to that provider under their privacy policy—never stored or accessed by this app's developer. Chat; read, and write faster with Flow; manage your Calendar, Contacts, and Health data using powerful, offline Agentic tools; and dive into text-based adventures in Game—all without ever needing an internet connection. Just like the resilient russet potato, Russet thrives anywhere, anytime. No accounts. No ads. Completely free. Start conversations with intelligent Templates that leverage deep system integration: get instant briefings populated with your actual calendar events for today, tomorrow, or the entire week ahead—all processed privately on-device. Russet combines conversational intelligence with your real system data to help you plan, prepare, and stay organized. Got a PDF? Drop it in chat! Russet can read it, pull out the important stuff, and answer your questions. Your file stays on your device and is never uploaded to the cloud, ensuring full privacy. Customize how Russet thinks: adjust creativity, tune its style, and provide additional guidance to get what you need. Got a chat for your eyes only? Lock it instantly with on-device biometrics. Got some text that needs to be revised, labeled, debated, summarized, or rewritten? Use the powerful yet simple Flow mode. Your calendar events, your contacts, your health, your files—everything Russet works with Apple Intelligence on stays yours and only yours: offline, off-grid, anywhere. A clean, lightweight, and native interface designed for privacy, focus, and flow. Intelligence that works for you whenever, wherever you want. Features • Privacy-first: All chats run fully on-device by default. If you enable a cloud model using your own API key, your requests are sent directly to that provider under their privacy policy—never stored or accessed by this app's developer. • Intelligent Templates: Chat with your real calendar data for instant daily, tomorrow, or weekly briefings. • Powerful chats: Customize the response style to your needs, branch and lock chats, and extract information from your PDFs. • Agentic processing: Russet can help manage your health, schedule, and contacts by intelligently coordinating with system services. • Flow: Revise, label, debate, summarize, or rewrite text with just one tap. • Game: Embark on text-based adventures, co-creating immersive stories with Russet. • Offline-ready: Works anywhere. No connection required. • Polyglot: 13 languages. Written and spoken. Russet requires Apple Intelligence. Optional: Bring your OpenAI API key to access powerful cloud models.

- Bring your own key to access GPT-5.1, GPT-5 mini, and GPT-5 nano directly from OpenAI's servers! If you want a voice chat, there's also GPT-realtime-mini. Simply enter your API key in Settings to expand Russet's chatting capabilities. Agent, Flow, and Game still run fully on-device using Apple Intelligence; cloud models can only be used in Chat. - Branch chats to explore multiple response paths. Branched chats copy over all messages and settings, allowing you to experiment without losing your original chat. - You can now drop a PDF into your chat! Russet will read it, extract key information, and answer your questions. Files stay private—they remain on your device and are never uploaded to the cloud. - Introducing Game: start with Questia, a rich, text-based adventure where you and Russet co-create immersive stories. - Set your default language for different modes in Settings. - Introducing Health Tools in Agent: with your permission, Russet can now help you track heart rate, sleep, steps, and workouts. - Choose from 6 principal colors in Settings to personalize Russet's appearance: Aqua, Coral, Mint, Olive, Peony and Plum.

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Usage Data

Information

  • Seller
    • Ritwik Takkar

  • Size
    • 17.6 MB

  • Category
    • Reference

  • Compatibility
    Requires iOS 26.0 or later.
    • iPhone
      Requires iOS 26.0 or later.

    • iPad
      Requires iPadOS 26.0 or later.

    • Mac
      Requires macOS 26.0 or later.

    • Apple Vision
      Requires visionOS 26.0 or later.

  • Languages
    • English

  • Age Rating
    18+
    • 18+

  • Copyright
    • © 2025 Ritwik Takkar