Offline AI Studio
Private, on-device AI—chat, image generation, voice, and tools for iPhone & iPad (App Store).
Sister product to OfflineGPT on Android—same privacy stance, Core ML on iOS. Optional cloud features with your keys. Billing via Apple.
Android? OfflineGPT — Google Play & dedicated product page.
Search link until a direct App Store URL is set—replace in code when Apple provides the public listing URL.
Built for iOS
Core ML diffusion, StoreKit, and tool tiers tuned for this build.
- iPhone & iPad via App Store (requirements on the listing)
- Image generation: Core ML SD 1.5 / 2.1 / SDXL-quality tiers
- StoreKit / in-app purchase for Pro (one-time)
What Offline AI Studio can do
On-device first—with honest optional online modes
Offline-first AI
Core chat, many tools, and voice run on-device after models download. Optional API mode and web search only when you enable them.
Privacy-minded
Local chats and generations stay on your device by default. Cloud providers and web search only receive data when you opt in—not via a CodeAlp chat backend for those flows.
Whisper voice input
Dictate prompts with on-device speech-to-text. Many languages; download size depends on the voice model you install.
On-device image generation
Core ML pipelines—SD 1.5 / 2.1 / SDXL-quality tiers (see in-app). All local inference once assets are on device.
AI tools
Summarize, tone, grammar, Simplify, Translate, posts, CodeLab, and more—Free vs Pro follows the table below.
Thinking models
Qwen3 thinking variants and SmolLM3 support step-by-step reasoning with compatible models.
Themes & languages
Light, Dark, and Aurora free; remaining themes with Pro. UI in multiple languages—see in-app.
Custom GGUF imports
Bring compatible GGUF chat models. Pro unlocks managing many imports; free tier keeps one catalog model plus one custom import (replace rules in Model Manager).
How it works
Four steps
Install from the App Store
Offline AI Studio for iPhone & iPad—see the store for current OS requirements.
Download models
Chat, image, and voice assets—sizes from under 1 GB to several GB per model.
Chat locally
Run prompts on-device. Enable API providers or web search only when you want them.
Go Pro if you like
One-time StoreKit purchase unlocks full model slots, premium themes, longer context, and Pro-gated tools.
Why Offline AI Studio
Defaults to your device—Core ML for images, clear limits for mobile RAM, optional network when you choose it.
Your keys, your device, your choice of models.
AI tools (iOS)
Free vs Pro follows the current App Store build. Document OCR and custom tool authoring are Pro; Email and Brainstorm are free on iOS.
| Tool | Access |
|---|---|
| Summarize | Free |
| Tone | Free |
| Grammar | Free |
| Explain | — |
| Simplify | Free |
| Post / social | Free |
| Translate | Free |
| CodeLab | Free |
| Document & OCR | Pro |
| Email writer | Free |
| Brainstorm | Free |
| Custom tools (create / manage) | Pro |
On-device models (catalog)
Approximate download footprints. Image stacks use Core ML on iOS.
Chat models
LFM2.5 1.2B
LiquidAI
Llama-3.2-1B
Meta
Gemma-2B
Qwen2.5-3B
Alibaba
Thinking models
Qwen3 0.6B Thinking
Alibaba
SmolLM3-3B
Hugging Face / ggml-org
Qwen3 1.7B Thinking
Alibaba
Qwen3 4B Thinking
Alibaba
Image generation (Core ML)
CoreML SD 1.5 Fast
On-device Core ML
CoreML SD 2.1 Balanced
On-device Core ML
CoreML SDXL Quality
On-device Core ML (iOS 17+)
Voice
Whisper (voice input)
OpenAI Whisper weights
Pro: import additional GGUF chat models where supported (RAM and validation apply).
Free vs Pro (iOS)
Current App Store build
| Feature | Free | Pro |
|---|---|---|
| On-device text/chat models | 1 catalog text model (replace to switch) + 1 custom GGUF import | Install and switch between many models from the manager |
| On-device image models at once | 1 (replace to switch) | Unlimited installed |
| Local chat context (typical max) | Up to 4,096 tokens | Up to 16,384 (local); API limits follow provider |
| System prompt editing | Presets visible; editing Pro | Full edit + custom saved prompts |
| User prompt templates | Max. 5 custom | Max. 5 custom in current build—see App Store release notes |
| Premium themes | All except Light / Dark / Aurora locked | Every theme |
| Cloud API providers & web search | Pro only | Add keys for OpenAI, Gemini, Groq, etc.; optional web search when enabled |
| Ads | None | None |
| Purchase type | — | One-time Pro (no subscription) |
One-time Pro purchase in the App Store—price shown at checkout.
Frequently asked questions
Do I need the internet?
You need a connection to download models and app updates. Core on-device features work without a network after that. Optional APIs and web search need internet when used.
Is Offline AI Studio free?
Yes. Free tier includes on-device use with limited slots—see the tables. Pro is a one-time in-app purchase.
Is there an Android version?
Yes. On Google Play the same product line ships as OfflineGPT. See the Android product page. OfflineGPT for Android.
Why a different name than OfflineGPT?
Apple’s store listing uses Offline AI Studio. Functionality aligns with the Android app; platform-specific engines (Core ML vs MNN) differ.
Which chat models are available?
Shared GGUF catalog (LFM2.5, Llama 3.2, Gemma 2B, Qwen2.5-3B, Qwen3 thinking family, SmolLM3). Filenames match the in-app downloader.
How does privacy work?
Default local use keeps data on device. Full policy: codealp.ch/privacy-offline-ai-studio.
What devices are supported?
See the App Store for supported iPhone and iPad models and OS versions. Pick models that fit available RAM.