Blackwall: Offline AI Chat

Private local LLM. No account.

Free · Designed for iPad. Not verified for macOS.

Turn on airplane mode and ask it something. It answers. The model is on your phone — no server, no account, nothing uploaded. Turn on airplane mode. Ask it a question. It answers. Blackwall runs a language model on your iPhone or iPad. Not a thin client for someone else's server — the actual model, loaded into your device's memory, generating each word on your hardware. There is no account to create, no subscription, and no request leaving your phone. WHAT THAT MEANS IN PRACTICE Your conversations are never uploaded, because there is nowhere to upload them to. No history sitting in a company's database. No terms-of-service change that quietly starts training on your messages. Nothing to delete from a server, because nothing was ever on one. Blackwall works on a plane, on the subway, in a country where the usual assistants are blocked, and on a phone with no SIM. SEVEN CURRENT MODELS, YOUR CHOICE A small model is built in, so you can ask something the second you open the app. From there you pick what you want to run: • Qwen3.5 — 0.8B to 9B, from instant short answers to quality-first text work • Gemma 4 E2B — general chat plus image and document understanding • MiniCPM-V 4.6 — focused OCR for screenshots, receipts and documents • Phi-4 Mini Reasoning — English math and structured derivations Each optional download is resumable and checksum-verified. Blackwall tells you whether a model fits your device before you spend the bandwidth, and you can delete any of them later. Already have a model you like? Import any .gguf file and Blackwall will run it. READ, LISTEN, SUMMARISE — ALL ON DEVICE • OCR and image understanding: point it at a receipt, a screenshot, a whiteboard • PDF and text documents: summarise a contract without emailing it to anyone • Voice input using Apple's on-device speech recognition • Text-to-speech for replies • Local memory that carries context between conversations • Export any thread as Markdown, or share a reply as an image BUILT FOR THE DEVICE iPad split view with a docked thread list. Keyboard shortcuts. A home-screen and lock-screen widget. Siri Shortcuts — "Ask Blackwall" works with no signal. Two appearances: Terminal, the full neon look, with nine themes to pick from — or Standard, plain high-contrast type that follows your device's light or dark setting. Five typefaces. Adjustable text size. THE HONEST PART Local models are smaller than the ones running in datacentres. A 4B model on a phone will not match a frontier model on a server, and Blackwall does not pretend otherwise — it tells you what each model is good at and what it costs in storage, memory and speed. The one thing Blackwall downloads is the model file itself, from Hugging Face, when you ask it to. After that you can stay offline forever. Requires iOS 17. A device with 6 GB of memory is recommended for mid-size models; the 9B model requires 12 GB.

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Blackwall now starts with Qwen3.5 0.8B and keeps chats easier to navigate. • The native llama runtime and downloadable model catalog have been refreshed • Chats are grouped by day, pins persist, and memory recall stays in a tappable chip until you need it • The interface now uses consistent angular panels, clearer controls, and a new Voodoo theme • Replies mix languages less often, and Command Deck labels are easier to scan

The developer, Can Kirsallioba, 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 Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Seller
    • Can Kirsallioba
    Size
    • 547.5 MB
    Category
    • Productivity
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and 10 more
    • English, French, German, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Turkish
    Age Rating
    18+
    • 18+
    • Infrequent
      Cartoon or Fantasy Violence
      Realistic Violence
      Profanity or Crude Humor
      Mature or Suggestive Themes
      Horror/Fear Themes
      Medical Treatment information
      Alcohol, Tobacco, Drug Use or References
      Sexual Content or Nudity
      Guns or Other Weapons

      Contains
      Health or Wellness Topics
    Copyright
    • © 2026 Can Kirsallioba