Lumo by Proton

🇺🇸 United States
Proton AG  | 
20
ASO score
Text
25/100
Reviews
0/100
Graphic
40/100
Other
0/100
rating
App Rating
3.9
rating
Votes
93.15K
rating
App Age
6m 10d
rating
Last Update
Dec 08, 2025
rating
iAP
$12.99 - 119.88

Compare with Category Top Apps

Metrics
Current App
Category Top Average
Difference
Installs
138.1K
478.4M
-100%
Rating
3.93
4.47
-12%
Number of Ratings (Voted)
93K
220M
-100%
App Age
0y 6m
6y 10m
-92%
In-app Purchases Price
$66
$85
-22 %
Update Frequency
34d
193d
-82%
Title Length
14
25
-44%
Short Description Length
32
72
-56%
Description Length
338
3 167
-89%
Number of Screenshots
522
1319
-60 %
Has Video?
No
0% has videos
Size
0MB
0MB

Category Ranking in United States

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Top Dec 08, 2025 Dec 15, 2025
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Top Dec 08, 2025 Dec 15, 2025
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Top Dec 08, 2025 Dec 15, 2025
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Top Dec 08, 2025 Dec 15, 2025
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Downloads

Downloads Graph
Downloads icon
Total
130K
Last month icon
Last month
16K

Text ASO

Title (
Characters: 14 of 50
)
Lumo by Proton
Short Description (
Characters: 32 of 80
)
A private AI assistant by Proton
Description (
Characters: 338 of 4000
)
Ask anything. It’s confidential. 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. Start a confidential chat today.}

Visual ASO

Screenshots

Rating & Reviews

Reviews Overview
🧐 Coming Soon…
Rating
3.9
93 150 voters

Some Latest Reviews

Eric
13 Dec, 2025
3
I appreciate the privacy-respecting aspect. However, there are ads in the model's answers, and the app loading screen is unnecessarily slow and frustrating.
Adam E (Fire2000)
13 Dec, 2025
1
This app is good so did I vote 1 star? You claim this is privacy focused but then you proceed to use several features of the Play Integrity API and release on only the Google Play Store despite all of Google's issues regarding privacy. The privacy claims are too bold and the downsides are not clear enough. You can't keep user prompts on the server encrypted, the bot needs to decrypt them in order to process them. Logs are also stored with no way of turning them off unless you use ghost mode
elkm07
13 Dec, 2025
3
la considero una buena opción pero prefiero chatgpt
Taino
13 Dec, 2025
5
I gave Lumo my most complex personal existential prompt and the result blew my mind! I have tested every other major Pro language model AI and none of them could deliver a satisfactory answer. The only one that could deliver a mind blowing answer was Gemini Pro 3.0 and now Lumo. Think about that for a moment. Lumo is free!
Tim Seet
12 Dec, 2025
1
I really wanted to like Lumo, but at this point, Lumo is unusable for me. Asking it questions regularly generates replies with an answer with the words from your question reiterated back to you. I often have to correct it because it doesn't understand my question and then it apologises and just rephrases its wrong answer in another way. I love the fact that it's private and honestly, I love everything else Proton has to offer, but unfortunately this didn't make the cut for me.
Дмитрий Пашков
12 Dec, 2025
1
Не работает. Москва Дополнено: при запуске либо белый экран, либо сообщение, что нет сети.
Murat
12 Dec, 2025
5
Not a good idea to release the app in this state; it doesn't even support images come on. 5 stars only for support. I won't keep using it right now.
Jonny hughes
12 Dec, 2025
5
Ai chat with a Cute cat. Automatically better than the rest.
Mario Kerst
11 Dec, 2025
2
Auch das ist keine KI. Hier wird ebenfalls lediglich politisch korrekter Nonsens wiederholt, den ich mit jeder Suchmaschine vorgeschlagen bekomme. Eine KI würde den "Ich fühle, also ist es so" Käse verneinen und mit Klarheit auf das Thema eingehen.

Other

Additional Information
Rating:
3.93
Voted: 93.15K
Google Play Link:
Website:
Email: -
Privacy Policy:
Categories: Productivity
Size: -
iAP: 12.99 - 119.88 $
Installs: 129.99K
App Age: 6 months 10 days
Release Date: Jun 06, 2025
Last Update: Dec 08, 2025
Version: 1.2.12-gms
Version history
1.2.12-gms
Dec 08, 2025
We've enabled more security and protection features.
1.2.10-gms
Nov 28, 2025
Stability and speech to text improvements
Version history