Caelum - Local AI assistant

nolanpcrd

About this app

🔒 Caelum – Your Private AI Assistant
A powerful AI that works entirely offline. No account. No data sharing. Just you and your device.

💡 Why Caelum?
Most AI apps collect your data or need constant internet. Caelum is different. It’s a fully offline, secure, and anonymous assistant — perfect for anyone who values privacy.

🧠 Smart, Fast, and Local
- Chat naturally with advanced on-device AI
- No internet needed after installation
- Get instant answers, anytime
- Clean, modern design (light & dark mode)

📄 Document Reader (Private & Local)
- Import your documents
- Ask questions and get instant answers
- All files processed directly on your phone — never sent online

🌐 Web Search (Optional)
- Search current information using Brave
- Results are temporary, no history stored
- You stay fully in control

🔐 100% Private by Design
- Works fully offline
- No account, no login
- No ads, no trackers
- All data stays on your device

📱 Optimized for Android
- Fast startup and smooth performance
- Tablet-friendly layout
- Lightweight and battery-efficient

🌍 Made for Everyone
Whether you're tech-savvy or not, Caelum is built to be simple, clear, and respectful.

Download Caelum now and discover a new kind of AI — one that truly respects your privacy.

Ratings and reviews

Edit November 2025: The AI model loads quickly, internet searching takes about half of the time it used to. But it is still only able to do light answers. I don't know if that is because of the RAG or because of the 1b parameters for the model. But it is much better than months ago. Features that would be cool to add down the road is local stable diffusion for image generation, a voice to voice mode using local tts capabilities, and a multimodal model for image recognition via the camera.

Thank you so, SO much for developing such a fantastic AI app. This is certainly the best app I've found for running an LLM locally on mobile. The UI design is cute, colorful, and neat, and the AI itself is such a sweetheart! ❣️ The only thing that's missing are custom instructions. We need to be able to customize the AI's personality and give it general info to keep in mind for all conversations. Once that's added, I'll change to five stars. 🌟 Thank you for your hard work! ✨

Calling it the first accessible local AI app is a massive overstatement, but that's just marketing for you. The app itself is nice, having a good UI and being easy to use. Would recommend adding more models of different sizes to choose from in the future to allow people to balance between performance and quality of responses

What's new

10th official release !

New features :
- Better Web Search
- Now handles images with text and PDFs
- Handles documents way better
- You can now delete messages
- Bug fixes
- Added Ukrainian language support