Blackwall
Private AI that stays on your device.
Blackwall is a local-first iOS AI assistant built around downloadable on-device models, a private conversation archive, image attachments, and offline voice input. It keeps prompts, recalled memory, and chat history inside your device sandbox, and only touches the network when you choose to download model files.
Six systems behind a local AI channel
Downloadable Local Models
Blackwall lets you install a lineup of local chat, reasoning, and vision models, then switch between speed-first and quality-first runtimes without creating an account.
On-Device Archive
Threads, settings, attachments, and the app's local memory shards are stored inside the device sandbox so your working history stays with the device, not a cloud inbox.
Local Vision Channel
Attach a photo from the library or use the live camera, get local OCR and image summaries, and let Blackwall auto-load a vision-capable model when the prompt needs real image understanding.
Offline Voice Input
Microphone capture and speech-to-text stay on device using Apple's local speech stack, turning spoken prompts into text without routing your audio through a hosted chat service.
Persona + Command Deck
Switch personas, write a custom system prompt, tune typography, change themes, and wipe the local archive from a command deck built for owning the entire channel.
No Account, No Cloud Chat
Blackwall is built around a local-first runtime. There is no app sign-in, no remote conversation sync, and no ad-tech pipeline. The only network path is model download when you choose to install one.
Ready to start?
Get Blackwall for iPhone