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KernelAI Review: Free Offline AI Chat for iPhone and Android

·6 min readBy Hans Kuepper · Founder of PromptQuorum · Discovery engine for open-weight & open-source AI

KernelAI (iOS version 2.2.0, updated 15 October 2026) is a free chat app that runs 53 downloadable open models, from 112 MB to 3.11 GB, on the phone itself. It is closed source, so its claims rest on the developer's own pages. PromptQuorum has not installed or tested it; every statement here comes from kernelai.app, the store listings and the privacy policy.

Key Takeaways

  • Maintenance: iOS version 2.2.0 was released on 15 October 2026 and Google Play shows the same update date, so no stale-project warning applies.
  • Cost: free with no account or subscription; optional tips unlock no features.
  • Devices: iOS or iPadOS 16.4 or later, and Android 7.0 or later; the app disables models your device cannot run.
  • Models: 53 open models from 15 labs, including Qwen, Llama, Gemma, Phi, DeepSeek and Mistral.
  • Transparency: closed source from a single publisher, with no repository found.

📍 In One Sentence

KernelAI is a free, account-free chat app that stores open models on iPhone, iPad and Android phones and, per its developer, processes everything there.

💬 In Plain Terms

You install it from the App Store or Google Play, download the models you want over Wi-Fi once, and then chat, attach documents or photos and use the models offline.

📌Note: This review is based on the website, the App Store and Google Play listings and the privacy policy, checked on 24 October 2026. PromptQuorum has not installed, tested or benchmarked the app.

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KernelAI is a free app for iPhone, iPad and Android that downloads open-weight language models onto the phone and runs them there through llama.cpp, so chat keeps working without a connection once a model is stored. It has been on the App Store since January 2026 and comes from a single publisher, so this review sticks to what its website, store listings and privacy policy say, as checked on 24 October 2026.

KernelAI Review: Free Offline AI Chat for iPhone and Android

What Is KernelAI?

KernelAI is a general chat app that turns a phone into a local model runner: you pick open-weight models from a catalog, download them once and talk to them offline. The 53 models come from 15 labs, among them Qwen, Meta, Google, Microsoft, DeepSeek, Mistral AI and NVIDIA, and are tagged by use such as coding, vision, thinking, multilingual or small size.

The App Store lists the app as "KernelAI - Offline AI Chat" from the seller Anes Khadiri, and the website presents it under the name KernelAI. It is a general assistant, not a character or companion app.

Get It

KernelAI is a normal store download for iPhone, iPad and Android; the sources mention no terminal and no account.

Item
Details
PlatformsiPhone, iPad and Android
App StoreKernelAI - Offline AI Chat
Google PlayKernelAI on Google Play
PriceFree; optional tips unlock no features
Websitekernelai.app
Privacy policyKernelAI privacy policy
LicenseClosed source; no repository found

Version reviewed: 2.2.0 on iOS, released on 15 October 2026 per the App Store listing; the first release was on 17 January 2026. Google Play shows an update on 15 October 2026, but its version number could not be read. The store title differs by country, for example "KernelAI - Offline-KI-Chat" in Germany and "KernelAI - オフラインAIチャット" in Japan.

Requirements

The sources require iOS or iPadOS 16.4 or later, or Android 7.0 or later, plus room for every model you download.

Item
What the sources say
Operating systemiOS or iPadOS 16.4 or later; Android 7.0 or later (per the website)
App sizeAbout 90 MB on iOS before any model download
Model storage112 MB to 3.11 GB per model
MemoryNo RAM figure published; the app disables models the device cannot run
Age rating17+ on the US App Store listing

The sources name no list of supported phones, so which devices can run the larger downloads is not stated.

How to Get Started

The steps follow the website and the store descriptions; PromptQuorum has not run them.

  1. 1
    Install the app
    Why it matters: Download KernelAI from the App Store or Google Play.
  2. 2
    Download a model
    Why it matters: Browse the catalog by provider, use case or size and download one over Wi-Fi; models your device cannot run are disabled.
  3. 3
    Chat or attach files
    Why it matters: Ask questions, or attach documents, photos, screenshots or charts and ask about them.
  4. 4
    Tune the model
    Why it matters: Set a system prompt and generation parameters per model and watch tokens per second and context use.
  5. 5
    Add your own files
    Why it matters: Optionally import a GGUF model or switch on web search with your own API key.
  6. 6
    Automate it
    Why it matters: On iOS, call the Ask KernelAI and Extract Text from Document actions from Shortcuts or Siri.

Features Confirmed by the Sources

Every item below comes from the website or the App Store description.

  • Models. 53 catalog models filterable by provider, use case (coding, vision, thinking, large context, roleplay, web search) and size.
  • Documents and vision. PDF, DOCX, CSV, Markdown and text files, plus photos, screenshots and charts with a compatible vision model.
  • Voice. Dictation uses the iPhone's own on-device speech recognition, and replies can be read aloud with the system voices.
  • Control. A system prompt and generation parameters per model, tokens per second, context use and the thinking output of reasoning models.
  • Organization. Folders, history search, chat branching, message editing and regeneration, export, a Share Sheet entry and a Home Screen widget on iOS.
  • Own models. GGUF files can be imported from Files, a URL or a server on your own network and are marked experimental.

Data Flow

Per the privacy policy (updated 16 August 2026), chats, prompts, attached files, images and transcriptions stay on the device, and the developer says it does not upload them to a server of its own. Models are downloaded from Hugging Face, which, per the policy, sees connection data such as your IP address but not your chats.

According to the policy, web search is off by default; when you turn it on with your own Tavily or Exa key, a short model-generated query goes to that provider, and the key is kept in secure device storage. Source icons load directly from the websites, which then see your IP address. In the production app, limited diagnostics go to Sentry: error type, stack trace, app version, device model, OS version, locale, memory status and sampled performance timings, with IP-based location disabled and prompts, conversations and attachments not intentionally included. The policy says this data is not used for advertising or behavioral analytics.

📌Note: These are the developer's own statements; PromptQuorum has not audited the app's network traffic or confirmed that nothing else leaves the device.

Who Should Use It

  • Phone owners who want free offline chat with a large catalog of open models and no account.
  • People who want to question their own PDFs, Word files or photos without the conversation going to a developer server, per the policy.
  • Tinkerers on iOS who want to import their own GGUF files or build Shortcuts automations.

What We Could Not Verify

  • Hands-on quality. PromptQuorum did not run the app, so answer quality, speed, battery use and which phones can run which models are not assessed.
  • Android parity. The sources describe iOS features such as Siri, Shortcuts, the widget and on-device dictation; which of them exist on Android is not stated.
  • Independent checks. The app has no source code and no third-party review of its network traffic.
  • Licensing limits. The terms (updated 5 January 2026) grant a personal, non-commercial licence and say each model stays under its creator's own licence, so business use needs a separate check.

Competitors and Alternatives

Locally AI

Platforms:
iPhone, iPad, Mac
Price / license:
Free / closed source
Key difference:
Runs open models on Apple devices through MLX; no Android version
Articles about Locally AI (5)

Also mentioned in:

Off Grid AI

Platforms:
iOS, Android, macOS, Windows
Price / license:
Freemium / MIT
Key difference:
Open-source and also available on desktop
Articles about Off Grid AI (2)

Also mentioned in:

Competitor details change often; confirm each app's current price, license and platforms on its own listing.

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Frequently Asked Questions

Which languages does the app support?

The App Store release notes name ten app languages: English, French, German, Spanish, Russian, Brazilian Portuguese, Japanese, Korean, Traditional Chinese and Arabic, the last with a right-to-left interface. The website's language menu also lists Simplified Chinese and Hindi, which the store text does not name.

Can it use Apple's built-in model?

The App Store description says that on supported iOS 26 devices Apple's built-in on-device model can answer in the background, while downloaded models may open KernelAI while they run.

Does web search cost money?

KernelAI adds no charge, but you must supply your own Tavily or Exa key, and the App Store description notes that provider fees may apply.

What happens to my data if I delete the app?

The policy says conversations and models live in app storage, deleting the app removes what it kept, and the developer holds no server-side copy to delete.

Verdict

KernelAI is a free, account-free chat app that, by its developer's account, runs 53 open models entirely on iPhone, iPad and Android phones, with documents, vision and Shortcuts on top. Against that, it is closed source, comes from a single publisher, grants only a personal, non-commercial licence, and PromptQuorum could not check its quality, its Android feature set or its network behavior. It suits curious users who want a large model catalog without an account; readers who want open source can compare PocketPal AI, and those who want a Mac version can look at Locally AI.

Sources

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