Nyth AI

Private AI. On your device

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

New: Spark (zero-download AI on iPhone 15 Pro+), Apex reasoning brain, and Nyth Pro with iCloud backup, search, personas and export. Still 100% on-device. No account. Nyth AI: private AI chat on your iPhone and iPad Use capable AI without sending your chats to our servers. Nyth runs language models on your device so your conversation text stays local. No account required. Built for people who care about privacy. BRAINS FOR DIFFERENT JOBS Choose the model that fits you, or start from Home with a preset and we will route you to the best brain for that flow: • Flash: Fast answers for quick questions (~300 MB) • Nova: General chat and creative brainstorming (~1 GB) • Sage: Code, math, and deeper analysis (~1.5 GB) • Spark: Apple's on-device AI on supported iPhones and iPads. No download. Instant start. (iPhone 15 Pro and later with Apple Intelligence) • Apex: Our most capable on-device brain. Stronger reasoning, code, and analysis (~2.5 GB). Included with Nyth Pro. Switch brains anytime in the Brains tab. SMART HOME PRESETS Code, research, creative writing, business, homework, and more. Each preset is tuned to pick a strong brain for the task. NATURAL VOICE • Dictate with the microphone (on-device speech recognition when supported) • Hear replies with spoken output; we clean up markdown so it sounds more natural • Simple recording and playback controls NYTH PRO (ONE-TIME PURCHASE) Upgrade once to unlock: • Apex: Phi-3.5 Mini, our smartest downloadable brain • iCloud Backup: Sync conversations across your iPhone and iPad via your own iCloud (optional; uses your Apple ID storage, not our servers) • Search: Find anything across your saved chats • Export: Share or save conversations as readable text • Custom Personas: Create your own AI personalities with custom instructions Free tier includes Flash, Nova, Sage, Spark (when eligible), voice I/O, Home presets, and unlimited local chat. PRIVACY-FIRST • AI inference on your device after you download a model (Spark uses Apple's built-in model with no download) • We do not run your chat on our servers • No ad or cross-app tracking in the app • Chats are stored on your device; optional iCloud backup stays in your private iCloud container BEFORE YOU CHAT Downloading a brain is a one-time fetch over Wi-Fi (typically hundreds of MB up to ~2.5 GB for Apex) from Hugging Face. After that, chat works offline with the models you have installed. WHO IT IS FOR Professionals, students, writers, and developers who want capable AI without shipping every message to the cloud. Nyth AI: local inference. Your data on your device.

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Welcome to Nyth AI 1.2, our biggest update yet. NEW BRAINS • Spark: Chat with Apple's built-in on-device AI on supported devices. No download, no extra storage. (iPhone 15 Pro and later with Apple Intelligence) • Apex: Phi-3.5 Mini, our most capable downloadable brain for reasoning, code, and analysis NYTH PRO One-time upgrade unlocks Apex, iCloud Backup across your devices, conversation search, export and share, and custom AI Personas. IMPROVEMENTS • Smarter Home presets with better brain routing for code, research, business, and more • More reliable streaming on long replies, especially on iPad • Redesigned Brains and Settings • Optional iCloud Backup so conversations can sync privately through your own iCloud • Voice and chat polish throughout Still no account. Still no cloud inference. Still your data on your device. Thank you for using Nyth AI. Reviews and feedback help us improve.

Version 1.2.0

The developer, ImmiGrader Tech LLC, 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 Linked to You

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

    • Usage Data

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
ImmiGrader Tech LLC
Size
29.3 MB
Category
Utilities
Compatibility
Requires iOS 18.6 or later.
  • iPhone
    Requires iOS 18.6 or later.
  • iPad
    Requires iPadOS 18.6 or later.
  • Mac
    Requires macOS 15.6 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 2.6 or later.
Languages
English
Age Rating
9+
In-App Purchases
Yes
Copyright
© 2026 Immigrader Tech LLC
  • Developer Website
  • Privacy Policy

    • More by ImmiGrader Tech LLC

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