Leaf: Eco AI Chat

Private Offline LLM Assistant

Only for iPhone

Free

iPhone

100% private, offline AI chat powered by Apple Intelligence. Built-in long-term memory, zero cloud servers, no account, and no subscription required. Private, offline AI chat that lives entirely on your iPhone. Leaf pairs a calm, botanical interface with Apple’s on-device Foundation Model so you can brainstorm, write, summarize notes, and work through code—even in Airplane Mode. No cloud servers. No accounts. No subscriptions. WHY LEAF IS DIFFERENT • 100% On-Device & Offline — Every prompt and response is generated locally on your iPhone using Apple Intelligence. Zero data leaves your device, and zero water or cloud data-center energy is used. • 4-Layer Context & Memory Engine — Inspired by modern LLM memory systems, Leaf combines session context, long-term user memories, recent chat summaries, and a smart token-based sliding window so it remembers who you are across conversations. • Transparent, Editable Memory — Leaf automatically learns your preferences, skills, and goals as you chat—or you can add, edit, and delete memories anytime in the built-in Memory & Context Inspector. • Smart Cross-Chat Summaries — When you switch topics, Leaf summarizes past threads on-device so you can pick up right where you left off. • No Account & No Subscription — Open Leaf and start chatting immediately. No sign-up, no email, no token paywalls, and no recurring fees. BUILT FOR REAL WORK & EVERYDAY THINKING • Summarize rough meeting or lecture notes into crisp checklists • Draft warm, concise replies and emails without filler • Debug code, compare architectures, and brainstorm weekend projects • Pin important threads and inspect real-time token capacity at a glance YOUR WORDS STAY YOURS In a world of cloud AI that harvests conversations for training, Leaf takes a quieter, local-first approach. Your thoughts stay on your phone—we can’t read them, and we never will.

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Welcome to Leaf 1.3 — a calm, botanical redesign for private on-device AI: • All-new warm sage-paper interface with unboxed editorial responses and fluid navigation • Upgraded 4-layer Apple Intelligence context engine for sharper reasoning, memory personalization, and cross-chat recall • Smarter automatic fact extraction and categorization in Memory • Improved handling for model refusals and context limits so conversations stay smooth • Starter prompts and faster session prewarming so you can jump right into a thought

Version 1.3

The developer, Big Numbers, Inc., 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, for example, based 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

    Seller
    Big Numbers, Inc.
    Size
    7 MB
    Category
    Productivity
    Compatibility
    Requires iOS 26.0 or later.
    • iPhone
      Requires iOS 26.0 or later.
    Languages
    English
    Age Rating
    18+
    Copyright
    © 2026 Big Numbers, Inc.
  • Developer Website
  • Privacy Policy

    • More by Big Numbers, Inc.

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