Cortis: Local LLM & AI Chat

neron

In-app purchases

About this app

Cortis runs powerful AI models entirely on your device. No internet. No cloud. No account. Just you and your AI.

Every word you type stays on your phone — not on a server, not in a data center. Right here, in your pocket. And because all processing happens locally, Cortis works perfectly in Airplane Mode, on flights, in remote areas, or anywhere you go.

— START CHATTING FOR FREE —

Three high-quality models are included at no cost:
- Llama 3.2 1B — fast and lightweight
- Qwen 3 1.7B — a great all-rounder
- Gemma 2 2B — sharp and capable

No paywall to get started. No time limit. No sign-up required.

— BUILT FOR PRIVACY —

Most AI apps send everything you type to a remote server. Cortis is different. It runs the AI locally using your device's own processor, so your conversations are private by default. Whether you work in law, finance, healthcare, or simply value keeping your thoughts to yourself, Cortis gives you a capable AI assistant that never phones home.

— POWERFUL FEATURES, RIGHT OUT OF THE BOX —

- Real-time streaming responses, just like the big cloud AI apps
- Full Markdown rendering — code blocks, tables, bold text, and more
- 6 built-in AI personas: General Assistant, Software Mentor, Creative Writer, Language Tutor, Researcher, and Short & Direct
- Conversation history saved locally and searchable anytime
- Quick-action prompts: Explain, Write code, Translate, Summarize, Brainstorm
- Copy, share, or regenerate any AI response in one tap
- Smart model recommendations based on your device's actual RAM
- Beautiful dark interface optimized for OLED displays
- Haptic feedback throughout (toggleable)
- Full UI in 10 languages: English, Turkish, Chinese, Japanese, Korean, Arabic, German, French, Spanish, and Russian

— CORTIS PRO: $14.99, ONCE. YOURS FOREVER. —

No subscription. No renewal. No auto-charge. Pay once and unlock:

- 5 additional models including Mistral 7B and Gemma 2 9B
- 8 language-optimized models built natively for Turkish, Chinese, Japanese, Korean, Arabic, German, French, Spanish, and Russian — real native-quality AI, not an English model struggling with your language
- Remote server inference — connect to Ollama or LM Studio running on your home network to access full-size 70B+ models
- Custom AI personas with your own system prompts, names, and icons
- Advanced inference controls: temperature, Top-P, Top-K, context size, GPU layers, and more
- Live Performance HUD showing real-time tokens per second and memory usage
- Device benchmark tool with visual comparison charts across models
- Smart device insights with personalized tips based on your usage

— WORKS EVERYWHERE —

No Wi-Fi. No cellular. No VPN required. Cortis works on planes, in remote areas, on restricted corporate networks, and in any environment where cloud AI simply cannot reach. Wherever your phone goes, your AI goes too.

Privacy Policy: https://neron.app/privacy

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/