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.

I installed it, and then when I opened the app there was written 1020mb with a time estimate. When 1020mb finished then It went out from the app automatically, and again I opened the app, it was written again the 1020mb was downloading for several times, and I don't know why, even my phone is Redmi Note 13 with 8GB RAM +8GB additional, and 256 storage which I use only 30%. If you read my comment as the developer of the app, do something. thanks for reading my comment. 💐❤️

Honestly, I’m struggling to understand how this app is pulling high ratings when it can’t even get past the “AI initializing” phase. I let it run for over 15 minutes with zero movement. It chewed through more than 1GB of data just trying to start up, and still delivered no functional value. From my vantage point, this isn’t a scalable user experience, and the app simply isn’t worth the download right now.

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