Private AI for iPhone & iPad

Private and local by default. Frontier when you want it.

Solair runs 60+ AI models entirely on your iPhone: offline, no account, nothing collected. Add your own API key to talk directly to ChatGPT, Claude, Grok, and more.

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60+ Models on your phone
100% On-device by default
0 Accounts or tracking
Free No subscription
Solair AI vision mode analyzing a Yosemite photo Solair AI showing live technology news headlines with web search Solair AI answering about Steve Jobs with images and 11 sources Solair AI coding a Tetris game in HTML with runnable preview Solair AI generating an image of a futuristic Mars city Solair AI sidebar with personas, themes and custom skills

Cloud AI is powerful. You should choose when to use it.

ChatGPT, Claude, Gemini, and Grok are remarkable, and Solair lets you use them directly with your own key. The thing worth being deliberate about is simple: the moment a question leaves your device, it lives by someone else's rules.

Cloud conversations may be used to train future models
Your prompts are stored on servers you don't control
Server-stored data can be subpoenaed or breached
A provider's privacy terms can change at any time

So Solair puts the choice in your hands. By default, everything runs on your device: offline, nothing collected. When you want a bigger model, connect one with your own key and talk to it directly.

Features

Everything you'd expect.
On your phone.

On-device by default, with cloud models a tap away when you want them.

On-Device Private AI

60+ models run entirely on your iPhone or iPad. Works in airplane mode, needs no account, and collects nothing. Your conversations never leave your device unless you choose a cloud provider.

Bring Your Own AI New

Connect Claude, ChatGPT, Grok, and more with your own API key. You talk to the provider directly: photos, PDFs, reasoning, image generation, and real web search with sources.

Voice Everywhere New

Live voice with ChatGPT and Grok, or on-device voice with any provider where only text ever leaves your phone. Live transcription types your words as you speak.

Health Intelligence Beta

Recovery scores, sleep insights, and correlations from 15+ Apple HealthKit metrics, analyzed entirely on-device. See how it works

Duress Code

A decoy passcode that silently wipes conversations and memory if you're ever forced to unlock. Paired with Face ID app lock and auto-lock protection.

Optional: connect any of these with your own API key and talk to it directly.

ClaudeClaude
ChatGPTChatGPT
GrokGrok
KimiKimi
CerebrasCerebras
DeepSeekDeepSeek
MistralMistral
GroqGroq
OpenRouterOpenRouter
Together AITogether AI
Voice Mode

Talk. Listen.
Instantly.

On-device voice works entirely offline: no server round-trips, no lag, nothing collected. Prefer a bigger model? Have live voice conversations with ChatGPT and Grok, or use any other provider through the on-device voice pipeline where only text ever leaves your phone.

Instant on-device responses

With a local model there's no waiting for servers. Answers come the moment you stop speaking.

Natural conversation

Speak freely with fluid, human-like voice interaction.

Private by default

With on-device voice, only text ever leaves your phone, never audio. Live voice with ChatGPT and Grok streams to that provider: your choice, clearly marked.

Health Intelligence Beta

Your health data.
Private AI insights.

Solair reads Apple HealthKit directly on your device, analyzing 15+ metrics: steps, heart rate, sleep stages, workouts, VO2 max, HRV, standing hours, walking steadiness, and more. Your health data never leaves your phone.

Recovery Score

Multi-factor algorithm using HRV, sleep quality, resting heart rate, and training load, calculated entirely on-device.

Correlation Insights

Reveals hidden connections between your sleep, activity, and heart rate patterns using statistical analysis.

Truly Private Health AI

Your health data never leaves your device. Cloud AI can't safely offer this. Solair can, because everything stays local.

Solair AI daily steps chart with active calories summary Solair AI menstrual cycle tracking with phase prediction Solair AI recovery score with HRV, resting heart rate and sleep

And a lot more

Every one of these ships in the same free app.

Auto ModePicks the right model for each task: fast, smart, or vision.
Engine SwitcherMove between On-Device, Auto, and Cloud from the top pill. Long-press for the full model library.
Think HarderRegenerate with a smarter model without losing context.
Memory & KnowledgeOn-device RAG over your facts, past chats, and documents, with cited sources.
PersonasFriends, historical figures, or custom characters with their own voices.
Conversation ForkingBranch any chat to explore a different direction without losing your thread.
Make It YoursThemes, accent colors, and your own photo as the chat background.
Document AnalysisPDFs, text files, and images up to 20 MB, processed on-device.
Vision AIPoint your camera at anything and get instant answers.
Private Web SearchReal-time info with image results and zero tracking.
Siri, Shortcuts & Widgets15+ Shortcuts actions plus Home Screen and Lock Screen widgets.
Your Private SpaceBuilt-in prompts for journaling and personal conversations, kept on-device with a local model.
Apple WatchAsk from your wrist. Falls back to Apple Intelligence when your phone is locked.
News IntelligenceAI-summarized headlines with follow-up questions, in 14 languages.
SkillsReusable presets like Code Reviewer or Travel Planner. Build your own or generate them.
Background IntelligenceChat summaries, morning briefs, and weekly health digests, generated on-device while your phone charges.
Live Code PreviewRender HTML, p5.js, Three.js, D3, Mermaid, and SVG instantly in chat.
10 LanguagesEnglish, Spanish, French, German, Italian, Portuguese, Japanese, Korean, Simplified Chinese, and Traditional Chinese.
Local Model SharingMove models between iPhone, iPad, and Mac over Wi-Fi or Bluetooth. No re-downloading gigabytes.
LAN Inference ServerTurn your iPhone into an OpenAI- or Ollama-compatible endpoint for Cursor, VS Code, or Open WebUI on your Wi-Fi.
Remote & Custom ModelsYour own Ollama or vLLM servers via Tailscale, or sideloaded MLX models through the Files app.
Apple Silicon NativeBuilt on Apple's MLX framework and optimized for the Neural Engine, so local models run as fast as the hardware allows.
Alpenglow over the Dents du Midi peaks in the Swiss Alps at dusk

Privacy isn't about having something to hide. It's about having the freedom to think without being watched.

Dents du Midi · Solair is made in Switzerland

Privacy First

Your conversations
stay yours.

By default, Solair collects nothing and runs fully offline on your device. Connect a cloud provider when you want more power: you talk to it directly with your own key, while your saved memory and past chats stay on your phone unless you choose to share them.

No account required

Start using AI instantly. No sign-up, no email, no phone number.

100% offline by default

On-device models run entirely on your iPhone or iPad's neural engine. Nothing leaves your device unless you choose a cloud provider.

Zero data collection

Solair has no account, no tracking, no analytics, and no data harvesting. It never sits between you and a provider.

Your memory stays private

Even with a cloud provider connected, your saved memory and other chats are withheld unless you turn on "Share memory & past chats." Off by default.

Duress Code

A second passcode that silently wipes all data while the app opens as normal.

How it works

If someone forces you to unlock your phone, enter the duress code instead of your real one. The app opens normally, but all conversations and memories are already gone. The coercion fails. Combined with app lock, Face ID, auto-lock on app switch, and lockout protection after failed attempts.

AI Models

60+ models.
All local.

Models from every major lab run directly on your iPhone or iPad, no cloud required, with direct HuggingFace access for more.

QwenQwen
Meta LlamaLlama
MistralMistral
Google GemmaGemma
DeepSeekDeepSeek
Liquid AILFM
Apple IntelligenceApple

Qwen 3 and 3.5, Llama 3.2, Mistral, Gemma 4, DeepSeek R1, LFM 2.5, Qwen VL for vision, and Apple Intelligence through the Neural Engine. Solair picks the right model sizes for your iPhone's RAM automatically.

Local models are catching up fast. When you want a bigger model, connect one with your own key and switch anytime. See how every local AI app for iPhone compares.

FAQ

Frequently asked questions

What is Solair AI?

Solair AI is a private, local-by-default AI assistant for iPhone and iPad. By default it runs 60+ AI models 100% offline on your device with zero data collection and no account required. Everything stays on your phone. When you want more power, you can connect cloud providers like Claude, ChatGPT, Grok, DeepSeek, Cerebras, Groq, and more with your own API key. Even then, your saved memory and past chats stay on your device unless you choose to share them. It's completely free to use.

Can I use cloud AI models like ChatGPT, Claude, or Grok in Solair?

Yes. Solair lets you connect Claude, ChatGPT, Grok, DeepSeek, Cerebras, Groq, and more with one tap using your own API key. You talk to the provider directly, so Solair is never a middleman collecting your data. Full cloud chats support photos, PDFs, reasoning models, image generation, and real web search with sources. Your saved memory and other conversations are withheld from the provider unless you turn on Share memory & past chats. On-device models remain the default whenever you want to stay fully offline and private.

Does Solair AI work without internet?

Yes, once you've downloaded your AI models, Solair AI works 100% offline. Models are downloaded once over Wi-Fi, then all AI processing happens on your device's neural engine with no internet needed. Your conversations never leave your device.

How many AI models does Solair AI support?

Solair AI supports 60+ models from every major AI lab, including Qwen 3, Llama 3.2, Mistral, Gemma 4, DeepSeek R1, and Qwen VL. All models run directly on your iPhone or iPad with direct HuggingFace access for even more.

How does Health Intelligence work with my data?

Solair reads 15+ Apple HealthKit metrics directly on your device: steps, heart rate, sleep stages (deep/core/REM), workouts, HRV, VO2 max, exercise time, standing hours, heart rate recovery, walking steadiness, blood pressure, menstrual cycle, and weight. All analysis, including recovery scores, correlation insights, and visualizations, happens entirely on your iPhone. Your health data is never sent to any server, never uploaded to the cloud, and never shared with anyone.

Is Solair AI really free?

Yes, completely free. No subscription, no ads, and no in-app purchases. Solair is made by one person, me, Simon. I built it because I believe it should exist, and I use it every day. There are optional tips in the app if you want to support my work.

Can I run bigger AI models with Solair AI?

Yes. Solair runs 60+ models on-device, but you can also connect to your own LLM servers via Tailscale VPN. This supports Ollama, vLLM, LM Studio, and any OpenAI-compatible API. Run a 70B model on your home machine and use it from your phone over your own private network. Auto-discovery finds servers automatically, and credentials are stored in the iOS Keychain.

Can I use Solair AI for personal or sensitive conversations?

Yes. For personal topics, Solair's on-device models run locally with zero data collection, so your most sensitive conversations (anxiety, journaling, emotional support, relationship advice) stay on your device. Built-in prompts help you get started. If you ever connect a cloud provider, that's your explicit choice, and your saved memory and past chats are still withheld unless you turn on sharing.

Is Solair AI a private alternative to ChatGPT?

Yes. By default Solair is a fully private, on-device alternative: the same experience of text chat, voice mode, document analysis, and vision, running entirely on your iPhone or iPad with zero data collection and nothing sent to a server. When you want a frontier model, you can connect ChatGPT, Claude, Grok, and more with your own API key and talk to them directly, with your saved memory and past chats withheld unless you choose to share them.

What is the best offline alternative to ChatGPT for iPhone?

Solair AI is the best offline alternative to ChatGPT for iPhone. It supports 60+ AI models that run directly on your device's neural engine, works without internet, and collects zero data. It includes voice mode, vision AI, document analysis, health intelligence, and features like conversation forking and a duress code that no cloud AI can offer. It's also completely free with no subscription.

Which AI apps don't collect your data?

Solair AI collects nothing itself: no analytics, no tracking, no account. By default it runs 100% on your iPhone with no cloud processing at all. If you do connect a cloud provider, you use your own API key and talk to it directly, so Solair is never the middleman, and your saved memory and past chats stay withheld unless you choose to share them. It also has a duress code that silently wipes your data under coercion. For a full comparison, see our guide to the best private AI apps.

Your device is the most private thing you own.
Your AI should be too.

Built by one developer who uses it every day. No ads, no subscription, no agenda.

Download on the App Store
Free · iOS & iPadOS 26+ · 48 MB · Made in Switzerland