Cipher AI runs powerful language models directly on your iPhone. No cloud. No subscriptions. No one reading your conversations.
Most AI apps send everything to the cloud. Cipher doesn't. Your conversations stay on your device, processed by powerful models running entirely locally.
Cipher runs powerful language models directly on your device. No cloud, no servers, no middlemen — just fast, private AI that's always in your control.
When you need more horsepower, connect Cipher to large models running on your Mac, PC, or Linux machine via LMBridge. Frontier-scale inference without paying per token.
Go beyond chat. Cipher exposes a growing catalog of MCP (Model Context Protocol) servers — giving your AI the ability to run commands, query databases, browse the web, and more.
No setup needed. These tools are available in every conversation, running entirely on your device.
See the model reason step-by-step before answering. Full support for DeepSeek-R1 and other reasoning models.
Responses appear word-by-word as the model generates them. No spinner, no waiting.
Download a model once and it works forever — airplane mode, no signal, no problem.
Tune temperature, context length, system prompts, and max tokens per conversation.
Background the app, come back later — Cipher picks up the LMBridge connection right where you left off.
No usage analytics, no conversation logging. The developer literally cannot read your chats.
LMBridge is a lightweight relay app you install on your computer. It connects your local LM Studio or Ollama models to Cipher over a secure WebSocket — so you can run a 70B model from your couch.
Pair Cipher to your computer with a 6-digit PIN. Model weights never leave your machine — only tokens are relayed.
Install LMBridge on the machine running LM Studio or Ollama, then pair it with Cipher on your iPhone using a 6-digit PIN. Available for macOS, Windows, and Linux.
Double-click the downloaded file. Drag Cipher LMBridge into your Applications folder.
macOS may show a security warning on first launch. Go to System Settings → Privacy & Security and click Open Anyway. This only happens once.
Open LM Studio and enable the local server (default port: 1234), or start Ollama which runs on port 11434. Load the model you want to use.
Open the app from your Applications folder. It connects to LM Studio or Ollama automatically and displays a 6-digit PIN in the menu bar.
In Cipher, go to Settings → LMBridge → Add Server. Enter the PIN shown on your Mac. You're connected — your Mac's models will appear in the model picker.
x64: Double-click the .exe and follow the setup wizard. LMBridge installs to Program Files and adds a Start Menu shortcut.
ARM64: Extract the .zip and run Cipher LMBridge.exe directly — no installation needed.
You may see a SmartScreen prompt on first run. Click More info → Run anyway. The app is safe — SmartScreen warns about any unsigned new app.
Open LM Studio and enable the local server (port 1234), or run Ollama (port 11434). Load your model of choice.
Start the app. It appears in your system tray and displays a 6-digit PIN to share with Cipher on your iPhone.
In Cipher, go to Settings → LMBridge → Add Server and enter the PIN. Your Windows models will appear instantly in the model picker.
Automatically picks the right build — x64 or ARM64.
Places the app in ~/.local/bin/ and makes it executable.
Launch LMBridge, start LM Studio (port 1234) or Ollama (port 11434), and enter the displayed PIN in Cipher under Settings → LMBridge → Add Server.
Download Cipher AI free and start chatting privately today. No account. No cloud. No catch.