Private AI for iPhone · Powered by Apple Intelligence

The AI assistant that never leaves your phone.

70+ AI tools that run entirely on your iPhone. No internet. No cloud. No account. No subscription — pay once and it's yours.

Download on the App Store — Free Free to download · $2.99 one-time unlock · No subscription
Works on airplane mode No data collection No sign-up
Vault AI showing a grid of 70+ on-device AI tools Vault AI private home screen with built-in Notes, To-Do, Flashcards and Recipes apps Vault AI chatting offline and answering a meal-prep question on device
100% on-device No cloud, no servers No account needed Pay once, keep forever

Screenshots

Everything an AI app should be — nothing it shouldn't.

Real screens from Vault AI on iPhone. Chat, 70+ tools, and built-in apps, all running privately on device.

Vault AI answering a high-protein meal prep question completely offline

Chat with AI — fully offline

Vault AI home screen: private, on-device, with Notes, To-Do, Flashcards and Recipes

Private home · built-in apps

Vault AI grid of 70+ on-device AI tools including Email Draft, Brainstorm and Cover Letter

70+ AI tools on device

Vault AI turning notes into a flashcard deck instantly

Turn notes into flashcards

How it works

Private AI in three taps.

No sign-up screen. No API key. No model to download. Open the app and start.

1

Download & open

Grab Vault AI free from the App Store. It uses Apple Intelligence already on your iPhone — there's no giant model to download and no account to create.

2

Pick a tool or just chat

Choose from 70+ purpose-built tools — rewrite, summarize, email drafts, flashcards, brainstorming — or open a normal chat. Set a quick profile so answers fit you.

3

Everything stays on device

Your words are processed right on the phone. Nothing is uploaded, logged, or tracked. Turn on airplane mode and it still works.

What's inside

One app. 70+ tools. Zero cloud.

More than a chatbot — a full private toolkit for writing, studying, cooking, career and everyday life.

Offline AI chat

Ask anything and get answers with no internet — on a flight, the subway, or a dead zone.

Write & rewrite

Draft emails, rewrite awkward sentences, paraphrase, proofread and set the perfect tone.

Summarize anything

Turn long text, articles or notes into a clean TL;DR and pull out the key facts.

Study & flashcards

Build study guides, make flashcard decks from your notes, and quiz yourself instantly.

Built-in apps

Notes, To-Do, Flashcards and a Recipe Box — all AI-powered and all on device.

Personalized to you

Add a profile — name, job, dietary needs — so every tool tailors its answers, privately.

Why on-device

Most "private" AI apps still make you download the internet.

Other offline chatbots ship a multi-gigabyte model and give you one chat box. Vault AI is different: it runs on Apple Intelligence — the model already built into your iPhone — so there's no huge download, and gives you a full toolkit instead of a single prompt.

  • No servers. Your prompts are processed on the phone, never uploaded.
  • No tracking, no account. Nothing to sign up for, nothing collected about you.
  • No giant model download. Uses Apple Intelligence, so the app stays lightweight.
  • No subscription. One $2.99 unlock and it's yours to keep.
Vault AI home screen marked Private and on-device

Guides

How to use private AI for what you actually do.

Short, practical guides for the things people search for — each shows exactly how Vault AI does it, offline.

Offline AI Chatbot

An AI chatbot that works offline

Chat with AI on a flight or with no signal — here's how on-device chat works.

Learn more Private AI Assistant

A private AI that keeps data on your device

What "on-device" really means and how to ask AI things you'd never paste into the cloud.

Learn more No Subscription

An AI app with no subscription

Tired of monthly AI bills? How to get a full AI toolkit for one payment.

Learn more On-Device AI · iPhone

On-device AI for iPhone (Apple Intelligence)

How to actually use Apple Intelligence in a real, do-everything app.

Learn more Works Without Internet

AI that works without internet

For flights, travel and dead zones — AI you can use with WiFi off.

Learn more AI Flashcard Maker

An AI flashcard maker that works offline

Turn any notes into a study deck in seconds — no upload, no account.

Learn more Private AI Email Writer

A private AI email writer

Draft and reply to emails without pasting sensitive text into a website.

Learn more Offline Summarizer

An offline AI text summarizer

Get a clean TL;DR of long text with no cloud and no character limits.

Learn more

FAQ

Questions, answered.

Does Vault AI work without internet?
Yes. Every tool runs on your iPhone with Apple Intelligence, so Vault AI works fully offline and on airplane mode — no WiFi or signal required. Learn more →
Is my data actually private?
Nothing you type leaves your phone. There are no servers, no logs, no tracking, and no account. Your prompts are processed on device and never uploaded. Learn more →
Is there a subscription?
No. Vault AI is free to download with a single $2.99 unlock. You pay once and keep it — no recurring charges. Learn more →
How is this different from other offline AI apps?
Most offline chatbots make you download a multi-gigabyte model and give you one chat box. Vault AI uses Apple Intelligence built into iOS, so there's no huge download — and it gives you 70+ tools plus built-in apps. Learn more →
Can it make flashcards and study guides?
Yes. Paste or type your notes and Vault AI builds a flashcard deck or study guide instantly, all offline. Learn more →
Can it write and summarize for me?
Yes — draft emails, rewrite, paraphrase, proofread, and turn long text into a clean summary, privately on device. Learn more →
Which iPhones are supported?
Vault AI runs on iPhones that support Apple Intelligence, on iOS 26 or later. Learn more →
Do I need an account or API key?
No. There's no sign-up, no login, and no API key. Download it and start using it right away. Learn more →

Your AI. On your phone. Nobody else's.

Download Vault AI free and keep every conversation private, offline, and yours.

Download on the App Store
Free · $2.99 one-time unlock · No subscription