Lumo by Proton

Lumo by Proton is an artificial intelligence assistant developed by Proton, a company specializing in online privacy, that allows you to resolve any question in a matter of seconds without compromising your privacy. All the conversations you have with this chatbot will be for your eyes only. No one will be able to pry into your conversation history with this assistant.

Use it as a guest or create an account

You don't need an account in order to use Lumo by Proton. You can simply start chatting with this virtual assistant as a guest without any problems. However, if you want to have unlimited use of the app, increase the maximum size of your conversations, and have the ability to upload large files, you will need a Proton account. Unlocking the PLUS version will give you access to all these additional features.

Differences between Lumo and other AIs

The main difference between Lumo and other artificial intelligence models, such as Gemini, Copilot, OpenAI, and DeepSeek, is that Lumo never uses your information to train its models, nor does it share your information with anyone. In addition, Lumo allows you to conveniently delete your conversation history and has its code open to the public (this is also true of DeepSeek).

Use Ghost Mode for added privacy

One of the most interesting features offered by Lumo by Proton is that, in addition to being able to use the app on a regular basis, you can also activate its so-called Ghost Mode. Your conversations with the AI while in this mode will disappear instantly, as soon as you exit the app, leaving no record, no log, or anything like that. It's a particularly useful feature for discussions about sensitive or private subjects, in which case it's better if there's no trace left behind.

One of the best AI chatbots that you can find

Download Lumo by Proton's APK to discover what is undoubtedly one of the best artificial intelligence chatbots you can find on Android. Not only is this app completely free, but it offers a level of privacy that other similar apps simply cannot match. It's an excellent alternative to the aforementioned Gemini or Copilot.