On-Device AI: TTS & STT Agent

Offline AI, Chat & Smart Voice

Free · In‑App Purchases

Private AI assistant with agents, faster voice typing, drag-and-drop files, and Markdown notes in Knowledge Libraries. Chat, transcribe, and research offline. Experience AI that runs entirely on your device. On-Device AI is your secure, private assistant for Mac, iPhone, iPad, and Vision Pro. Chat with leading local models, type with your voice, transcribe meetings, and analyze documents — all while keeping your data private. No cloud required unless you choose it. PRIVATE BY DEFAULT Your conversations, documents, transcripts, and model runs stay on your device. Nothing leaves unless you explicitly connect to an online provider or web tool. • Run powerful local models like Llama, Gemma, Phi, Qwen, DeepSeek, and more • Store models where you want: internal storage, an external drive, or a shared volume • Analyze sensitive PDFs and documents safely offline • Use local, offline speech recognition and text-to-speech • Connect to cloud providers only when you need to TALK, TRANSCRIBE, AND LISTEN Turn speech into text instantly, then have answers read back when you would rather listen. • Use Voice Typing on Mac and the voice keyboard on iPhone and iPad • Choose from Apple Speech, Whisper, Parakeet, Nemotron, Qwen3-ASR, and more • Record and transcribe meetings, lectures, interviews, and voice memos • Import audio files or re-transcribe a recording with a different model or language • Create speech with Apple voices, Kokoro, PocketTTS, Qwen 3 TTS, CostVoice, and VibeVoice • Clone your voice and use it with supported speech engines • Export transcripts as text, subtitles, or Markdown AI CHAT THAT FITS YOUR WORKFLOW Work with local or cloud models, attach your own content, and stay in control of every conversation. • Drag documents and images into a chat, or paste them in • Read past conversations instantly without loading a model first • Fork a conversation from any message without losing the original • Copy or export complete threads • Select several conversations to delete or add to a Knowledge Library at once • Get more room to type when the keyboard is open on iPhone or iPad • Switch models, tools, and roles as your task changes BUILD YOUR OWN KNOWLEDGE LIBRARY Turn documents, notes, conversations, and transcripts into private, searchable context for your AI. • Add PDFs, text files, Markdown, code, images, and website content • Drag files straight into your library • Write and edit Markdown notes without leaving the app • Import AI chats, voice notes, or text-to-speech items • Search and filter large libraries quickly • Adjust retrieval settings per library when you need more control • Re-index edited content so results stay current WEB RESEARCH, TOOLS, AND AGENTS Give your AI what it needs for research and multi-step work. • Search the web from inside a conversation • Let the browser agent open pages, read sites, and gather information • Pause the browser, adjust the task, or take over manually • Use tools for calculations, network requests, and document analysis • Build specialist agents for writing, coding, analysis, and planning • Run subagents and bring their results back into one conversation BUILT FOR APPLE DEVICES • Start requests or open saved content with Siri, Apple Shortcuts, and App Intents • Reach common actions from the Mac menu bar and customizable keyboard shortcuts • Use On-Device AI on iPhone, iPad, Mac, and Vision Pro • Take advantage of Apple hardware acceleration for supported local models New in 1.45.0: faster voice typing, drag-and-drop files, Markdown notes in Knowledge Libraries, re-transcription controls, batch history actions, and broader Shortcuts support. TAKE CONTROL OF YOUR AI Stop sending your private data to the cloud. Download On-Device AI today to build your own personal, secure AI workspace that goes wherever you do. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

  • 4.4
    out of 5
    162 Ratings

Version 1.46.0 adds Calendar and Reminders tools, a faster Text Note workspace, stronger AI Search, and more Shortcuts support. • Calendar and Reminders tools: With your permission, AI tools can read, create, update, complete, move, and delete events or reminders after you review changes. • Text Note workspace: Create a note quickly, pick the Knowledge Library it belongs to, edit in a cleaner notes view, and keep it searchable. • Cleaner AI Search context: Web results now skip consent pages, cookie notices, search-engine boilerplate, and other unusable pages, with fallback behavior when a result set is noisy. • Save AI Search results: Import a completed AI Search answer into a Knowledge Library as a curated Markdown snapshot with the query, answer, sources, and supporting context. • Smarter note destinations: When you use multiple Knowledge Libraries, the app asks where a new note should go instead of creating duplicate default libraries. • Customizable side menu: Choose which sections stay pinned in the sidebar and open everything else from the new Menu. • More Shortcuts actions: Transcribe audio files, speak text, export generated audio, and create Text Notes from Apple Shortcuts or Siri. • Better TTS playback: Kokoro long-form playback now keeps generated segments tied to the active session, so restarts and cleanup behave more reliably. • Safer Calendar & Reminders permissions: Actions require explicit permission, personal-data consent, and a review step before changes are applied. • Fixes and improvements: Improved Text Note selection, autosave/status feedback, keyboard behavior, and sidebar navigation.

The developer, Zijie Deng, 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

    The developer indicated that this app supports the following accessibility features. Learn More

    • Supported Features

      • VoiceOver

      • Dark Interface

    Seller
    • Zijie Deng
    Size
    • 1.8 GB
    Category
    • Utilities
    Compatibility
    Requires iOS 18.0 or later and a device with the A12 Bionic chip or later.
    • iPhone
      Requires iOS 18.0 or later and a device with the A12 Bionic chip or later.
      • ⁨iPhone XS⁩
      • ⁨iPhone XS Max⁩
      • ⁨iPhone XR⁩
      • ⁨iPhone 11⁩
      • ⁨iPhone 11 Pro⁩
      • ⁨iPhone 11 Pro Max⁩
      • ⁨iPhone SE (2nd generation)⁩
      • ⁨iPhone 12 mini⁩
      • ⁨iPhone 12⁩
      • ⁨iPhone 12 Pro⁩
      • ⁨iPhone 12 Pro Max⁩
      • ⁨iPhone 13 Pro⁩
      • ⁨iPhone 13 Pro Max⁩
      • ⁨iPhone 13 mini⁩
      • ⁨iPhone 13⁩
      • ⁨iPhone SE (3rd generation)⁩
      • ⁨iPhone 14⁩
      • ⁨iPhone 14 Plus⁩
      • ⁨iPhone 14 Pro⁩
      • ⁨iPhone 14 Pro Max⁩
      • ⁨iPhone 15⁩
      • ⁨iPhone 15 Plus⁩
      • ⁨iPhone 15 Pro⁩
      • ⁨iPhone 15 Pro Max⁩
      • ⁨iPhone 16⁩
      • ⁨iPhone 16 Plus⁩
      • ⁨iPhone 16 Pro⁩
      • ⁨iPhone 16 Pro Max⁩
      • ⁨iPhone 16e⁩
      • ⁨iPhone 17 Pro⁩
      • ⁨iPhone 17 Pro Max⁩
      • ⁨iPhone 17⁩
      • ⁨iPhone Air⁩
      • ⁨iPhone 17e⁩
    • iPad
      Requires iPadOS 18.0 or later and a device with the A12 Bionic chip or later.
      • ⁨iPad Pro (11‑inch)⁩
      • ⁨iPad Pro (11‑inch) Wi‑Fi + Cellular⁩
      • ⁨iPad Pro (12.9‑inch) (3rd generation)⁩
      • ⁨iPad Pro (12.9‑inch) (3rd generation) Wi‑Fi + Cellular⁩
      • ⁨iPad mini (5th generation)⁩
      • ⁨iPad mini (5th generation) Wi‑Fi + Cellular⁩
      • ⁨iPad Air (3rd generation)⁩
      • ⁨iPad Air (3rd generation) Wi‑Fi + Cellular⁩
      • ⁨iPad Pro (11‑inch) (2nd generation)⁩
      • ⁨iPad Pro (11‑inch) (2nd generation) Wi‑Fi + Cellular⁩
      • ⁨iPad Pro (12.9‑inch) (4th generation)⁩
      • ⁨iPad Pro (12.9‑inch) (4th generation) Wi‑Fi + Cellular⁩
      • ⁨iPad Air (4th generation)⁩
      • ⁨iPad Air (4th generation) Wi‑Fi + Cellular⁩
      • ⁨iPad (8th generation)⁩
      • ⁨iPad (8th generation) Wi‑Fi + Cellular⁩
      • ⁨iPad Pro (11-inch) (3rd generation)⁩
      • ⁨iPad Pro (11-inch) (3rd generation) Wi‑Fi + Cellular⁩
      • ⁨iPad Pro (12.9-inch) (5th generation)⁩
      • ⁨iPad Pro (12.9-inch) (5th generation) Wi-Fi + Cellular⁩
      • ⁨iPad mini (6th generation)⁩
      • ⁨iPad mini (6th generation) Wi-Fi + Cellular⁩
      • ⁨iPad (9th generation)⁩
      • ⁨iPad (9th generation) Wi-Fi + Cellular⁩
      • ⁨iPad Air (5th generation)⁩
      • ⁨iPad Air (5th generation) Wi‑Fi + Cellular⁩
      • ⁨iPad (10th generation)⁩
      • ⁨iPad (10th generation) Wi‑Fi + Cellular⁩
      • ⁨iPad Pro (11‑inch) (4th generation)⁩
      • ⁨iPad Pro (11‑inch) (4th generation) Wi‑Fi + Cellular⁩
      • ⁨iPad Pro (12.9‑inch) (6th generation)⁩
      • ⁨iPad Pro (12.9‑inch) (6th generation) Wi‑Fi + Cellular⁩
      • ⁨iPad Air 11-inch (M2)⁩
      • ⁨iPad Air 11-inch (M2) Wi-Fi + Cellular⁩
      • ⁨iPad Air 13-inch (M2)⁩
      • ⁨iPad Air 13-inch (M2) Wi-Fi + Cellular⁩
      • ⁨iPad Pro 11-inch (M4)⁩
      • ⁨iPad Pro 11-inch (M4) Wi-Fi + Cellular⁩
      • ⁨iPad Pro 13-inch (M4)⁩
      • ⁨iPad Pro 13-inch (M4) Wi-Fi + Cellular⁩
      • ⁨iPad mini (A17 Pro)⁩
      • ⁨iPad mini (A17 Pro) Wi-Fi + Cellular⁩
      • ⁨iPad (A16)⁩
      • ⁨iPad (A16) Wi-Fi + Cellular⁩
      • ⁨iPad Air 11-inch (M3)⁩
      • ⁨iPad Air 11-inch (M3) Wi-Fi + Cellular⁩
      • ⁨iPad Air 13-inch (M3)⁩
      • ⁨iPad Air 13-inch (M3) Wi-Fi + Cellular⁩
      • ⁨iPad Pro 11-inch (M5)⁩
      • ⁨iPad Pro 11-inch (M5) Wi-Fi + Cellular⁩
      • ⁨iPad Pro 13-inch (M5)⁩
      • ⁨iPad Pro 13-inch (M5) Wi-Fi + Cellular⁩
      • ⁨iPad Air 11-inch (M4)⁩
      • ⁨iPad Air 11-inch (M4) Wi-Fi + Cellular⁩
      • ⁨iPad Air 13-inch (M4)⁩
      • ⁨iPad Air 13-inch (M4) Wi-Fi + Cellular⁩
    • Mac
      Requires macOS 15.0 or later.
    • Apple Vision
      Requires visionOS 2.0 or later and a device with the A12 Bionic chip or later.
    Languages
    English and 8 more
    • English, Dutch, French, German, Italian, Japanese, Portuguese, Spanish, Traditional Chinese
    Age Rating
    16+
    • 16+
    • Infrequent
      Profanity or Crude Humor

      Contains
      Unrestricted Web Access
      Messaging and Chat
    In-App Purchases
    Yes
    • Pro Member Subscription $3.99
    • Lifetime Pro Member $49.99
    • Pro Member Subscription $34.99
    • Lifetime Pro Member $99.99
    Copyright
    • © Zijie