Cortex
On-Device AI Assistant
Run powerful AI models entirely on your phone. No internet needed, no data collection, no cloud. Your conversations stay on your device — always.
AI That Respects Your Privacy
100% Private
Everything runs on your device. No data ever leaves your phone. No accounts, no cloud, no tracking.
On-Device AI
Powered by llama.rn with Metal/GPU acceleration. Fast inference directly on your phone's processor.
9 AI Models
Choose from Llama, Gemma, Qwen, Phi, Mistral, SmolLM and more. From 0.75 GB to 5.5 GB — pick what fits your device.
Works Offline
No internet connection required. Use AI anywhere — on a plane, in the subway, or off the grid.
Natural Conversations
Full chat interface with conversation history, streaming responses, and smart suggestions.
Smart Resource Management
Automatic device capability detection. Falls back gracefully from GPU to CPU to ensure every model runs smoothly.
Choose Your AI
From ultra-light models for any device to powerful 9B parameter models for flagship phones.
Unlock All Models
One-time purchase. No subscription. Yours forever.
Cortex Pro
- Access all 9 AI models (5 Pro-exclusive)
- Larger, more capable models (up to 9B parameters)
- Premium models: Llama 3B, Qwen 2.5, Phi-4, Mistral 7B, Gemma 9B
- Future model updates included
- Support independent development
One-time purchase — no subscription
ChatGPT Plus: $240/year
Cortex Pro: $14.99 once — save $225+ per year
Your AI. Your Device. Your Privacy.
Download Cortex and start chatting with AI that never leaves your phone. No account needed. No data collected. Ever.
Bundle ID: app.neron.cortex