Caelum is a private AI assistant that runs entirely offline on your device, with no account or data leaves the phone. It combines on-device AI chat, local document reading, and optional Brave-based web search for a privacy-first experience. With 10,000+ total downloads and 230 in the last 30 days, Caelum shows strong traction among users who value security and speed.
Pros & Cons
Private and offline by design (no account or data sharing)
On-device AI chat and private document processing
Optional Brave-based web search with no history stored
No ads or trackers for a clean user experience
Web search is optional and relies on Brave rather than a built-in browser
Some users may prefer always-online features not available in an offline-first app
About Caelum - Local AI assistant
Caelum - Local AI assistant is a productivity app developed by nolanpcrd.
How many times has Caelum - Local AI assistant been downloaded?
Caelum - Local AI assistant has been downloaded 12 thousand times. In the last 30 days, the app was downloaded 230 times.
What is the rating of Caelum - Local AI assistant?
Caelum - Local AI assistant is rated 4.33 out of 5 stars, based on 250 ratings.
Is Caelum - Local AI assistant free?
Caelum - Local AI assistant is free to download. The APK download size is 39.52 MB. The latest version available is 1.3.1. The last update was on August 14, 2025.
What are the requirements for Caelum - Local AI assistant?
The app has a content rating of Everyone. The app has been available on Google Play since July 2025.
Description
π Caelum β Your Private AI Assistant
A powerful AI that works entirely offline. No account. No data sharing. Just you and your device.
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Comments on Caelum - Local AI assistant for Android
β β β β β Michael WalshΒ· Jan 24, 2026
Lots of local AI apps exist but none are as plug and play as this one. The only area of improvement I'd suggest is having an "about" section that displays which version of Gemma is being pulled and what runtime is serving it (liteRT, media pipe, llama, etc.) I guarantee that even if the app description without any app changes specified model/runtime would make this app get a lot more DLs on the play store, as Gemma bundled without the Apache license doesn't get the attention this deserves.
β β β β β Gaven HendersonΒ· Dec 28, 2025
Fantastic app so far, I sense there's some fine-tuning to compliment the smaller output, and It's great to see search functionality in a local AI app!
β β β β βR ThomasΒ· Mar 21, 2026
This is a great app, very simple and easy to use. My only suggestion is the option of some downloadable AI models. I understand this very small model is great for most people, but I would love to use bigger models.
β ββββRam PandeyΒ· Dec 8, 2025
No hindi language π and most of the answers are out of box. I question. How many languages you know. He says. I m AI I don't know any language π
β ββββMJ NOΒ· Dec 18, 2025
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 8Β GB RAM +8Β GB 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. πβ€οΈ
Google Play Rankings for Caelum - Local AI assistant
This app is not ranked
Technologies used by Caelum - Local AI assistant
9 permissions
Subscribe to see full permission and library details
Trust & Safety: Caelum requests a range of permissions to enable its features: INTERNET, ACCESS_NETWORK_STATE, ACCESS_WIFI_STATE, WRITE_EXTERNAL_STORAGE, READ_EXTERNAL_STORAGE, WAKE_LOCK, and license/dynamic receiver permissions. These enable offline on-device processing, local document handling, and optional Brave web search, while the app emphasizes no account, no data sharing, and a privacy-first approach.
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.