Lumo by Proton

Your Private AI Assistant

Published by: Proton

Description

Meet Lumo, the privacy-first AI assistant created by Proton, the team behind encrypted email, VPN, password manager, and cloud storage trusted by over 100 million people.
Lumo helps you stay productive, curious, and informed — without ever compromising your privacy.
For more information visit our website: https://lumo.proton.me/about
Terms of service: https://lumo.proton.me/legal/terms
Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Our open-source code base: https://github.com/ProtonLumo/ios-lumo
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In-Apps

Lumo Plus (12 months)
$149.99
Lumo Plus (1 month)
$16.49

Screenshots

Lumo by Proton FAQ

  • Is Lumo by Proton free?

    Yes, Lumo by Proton is free to download, however it contains in-app purchases or subscription offerings.

  • Is Lumo by Proton legit?

    🤔 The Lumo by Proton app's quality is mixed. Some users are satisfied, while others report issues. Consider reading individual reviews for more context.

    Thanks for the vote

  • How much does Lumo by Proton cost?

    Lumo by Proton has several in-app purchases/subscriptions, the average in-app price is $83.24.

  • What is Lumo by Proton revenue?

    To get estimated revenue of Lumo by Proton app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.

User Rating

3.58 out of 5

38 ratings in Canada

5 star
12
4 star
12
3 star
6
2 star
2
1 star
6
Ratings History

Lumo by Proton Reviews

Toujours incorrect

Tanné des surnoms on

Canada

Je teste le modèle en pesant des questions dont je sais la réponse est c'est toujours faux. Je désinstalle. Quelle cochonnerie.

Great app but needs some improvements

tomekkkkkkkkkkkk on

Canada

I’m very happy this app exists. Unfortunately the font size is way too small for me. Please add support for Dynamic Type and dark mode.

Great experience

DerelictHeart on

Canada

Love it so far, clean simple and privacy focused is exactly what i’m looking from an AI assistant. Please add a “dark mode”, it’s 2025 😁… I don’t know if its planned, but being able to prompt vocally would be appreciated.

Not sure what it does

/ lm lknjkjnlknlkn on

Canada

Downloaded it and asked it to do 3 different things for me. Each time it said it can’t do that. I asked it “what can you help me with?” And it said “I'm sorry, but I can't help with that.” Pretty much sums up my experience.

Good so far but needs dark mode.

Hbslucas on

Canada

As a person who tries to put privacy first, I really love this idea. The fact that (so far) it seems as good as ChatGPT (I’m not someone who needs complex things solved) I think I’m going to love this ai. Unfortunately, given there no Dark mode I find it difficult to use the app during night time when I usually have random thoughts. Really hope dark mode gets added, might test out plus if it does get added. (Oh and thank you so much for not making web search a paid feature)

Something is going on…

Ghosta 9733 on

Canada

Like it a lot but it doesn’t work anymore since yesterday… it’s just a white screen

Detailed improvement review:

PrivacyDefender404 on

Canada

It should have the voice recording-to-processing feature that ChatGPT has for people with speech difficulties, it should be able to know what I’m talking about even if the Apple voice to text was off, it should have a auto search feature so you don’t have to click the button each time, when you ask it to do a search it should be forced to do a search whether it thinks it should or not, we need faster loading times, and we can’t wait for a live video feature!

A great idea — needs time

Damen k on

Canada

The space for secure and safe AI is limited. I’m glad proton is doing this. But it feels a bit rushed. Dark mode for example seems like an obvious thing to have. Also would have been nice for proton subscribers to have a tier above base.

Disappointing Conversations

Tails12345 on

Canada

The conversations are very basic and generic. When asking it to get into more specifics it can’t seem to give granular facts. Also very annoyingly, it randomly won’t help or respond to a message saying “Lumo cannot assist with that request” with some very basic non-controversial work questions. It won’t tell me why it won’t respond either. It makes no sense what it chooses to respond and what not to respond to. The app isn’t usable like this.

It has potential

RamiroRostagno on

Canada

I have high hopes for this. It needs a dark mode (and dark icon), also the ability to disable history entirely.

Store Rankings

Ranking History
Category Rankings
Chart
Category
Rank
Top Grossing
45
Top Free
70
Top Free
319
Top Free
324
Top Free
343

Lumo by Proton Competitors

Lumo by Proton Installs

Last 30 days

Lumo by Proton Revenue

Last 30 days

Lumo by Proton Revenue and Downloads

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App Info

Publisher
Proton
Languages
Dutch, German, Russian, Spanish, English, Italian, Czech, Turkish, Portuguese, Polish, French
Recent release
1.2.5 (1 week ago )
Released on
Jul 23, 2025 (4 months ago )
Last Updated
4 days ago
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