Foundation-Chat

On-Device AI Chat

Free · Designed for iPad. Not verified for macOS.

Private AI chat on iPhone and Mac. Apple Foundation Models or local open models, live streaming, organized conversations—your words never leave the device. FoundationChat: Intelligent Conversations, Completely Private Experience AI without compromising your privacy. FoundationChat runs entirely on your iPhone or iPad—no internet required, no data sent to servers. Uses Apple’s on-device Intelligence or Cactus open models. PRIVACY FIRST 100% on-device processing—no ChatGPT, OpenAI, or third-party AI Zero data collection—conversations never leave your device No account, login, or tracking FEATURES Natural conversation powered by on-device AI Context-aware responses Multiple conversation threads Clean SwiftUI interface Works offline with instant responses Unlimited chat sessions REQUIREMENTS iOS 26.0 or later Apple Intelligence: iPhone 15 Pro+, iPhone 16+, or iPad with M1+ (enable in Settings) Cactus: iPhone 13 Pro and other devices with 4GB+ RAM (download a model in-app) WHY FOUNDATIONCHAT? Unlike cloud-based chatbots, FoundationChat keeps everything local. Your questions and conversations stay on your device. Ideal for brainstorming, writing help, learning, and any task where privacy matters. Download FoundationChat for truly private AI conversations.

Ratings & Reviews

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• New & updated downloadable models — Expanded lineup of on-device weights you can pull in and run locally, with clearer choices in model management. • Stronger local inference — Improvements to the on-device inference engine for loading, running, and switching models more reliably. • Downloads & setup — Smoother model downloads and fewer rough edges when adding or replacing models. • Reliability — Better behavior with large models and long, streaming replies, including more dependable saving while a response is still generating. • Polish — Bug fixes and small UI improvements.

Version 1.01

The developer, Sagar Desai, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary based, for example, on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Provider
    • Sagar Desai
    Size
    • 8.1 MB
    Category
    • Productivity
    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 and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 26.0 or later.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • © 2026 Sagar Desai
  • Privacy Policy

    • More by Sagar Desai