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Lumo AI by Proton

Proton AG · Productivity · India store
NOT IN TOP 100 HERE
View on App Store ↗
Revenue a month, worldwide EST
$12.1K
Likely $4K to $36.3K
▼ 14.3% in 27 days
New ratings
+15
in 9 days, 1.3K in total
Rating
4.1 of 5
18 ratings in this store
Countries it ranks in
2
was 3 on Oct 15, 2026

Revenue

Estimated from the grossing charts of Oct 21, 2026 in the 53 countries we track, and ratings growth on the App Store.

EST. REVENUE / MONTH · WORLDWIDE · APP STORE
$12.1K
Range $4K to $36.3K
EST. REVENUE / YEAR · WORLDWIDE
$145.4K
No Google Play version found
EST. LIFETIME DOWNLOADS
630 to 1.8K
Estimated from ratings count
WHERE IT EARNS · EST. / MONTH
  • Austria #64 Productivity$7.6K · 63%
  • Finland #82 Productivity$4.5K · 37%
HOW SURE ARE WE
Small app: combines its grossing ranks with ratings growth (87 new ratings a month on average since launch). Tested on 418 apps with verified revenue: typically off by about 2.4 times, so the range is wide. Countries we don't track (and Google Play in China, which doesn't exist) aren't included, and neither are ads or web payments. Gross revenue before store fees.
RATINGS
18
AVG RATING
4.06
PRICE
Free
AGE
1.2y
LAST UPDATE
1d ago
VERSION
2.1.2
SIZE
103 MB
AGE RATING
4+

Last 29 days

From our daily snapshots of every grossing chart and daily ratings counts.

DAYS IN A GROSSING CHART
20 / 29
COUNTRIES NOW
3 (was 2)
NEW RATINGS, LAST 7 DAYS
+12
EST. REVENUE A MONTH, DAILY · APP STORE EST
Show daily values
Sep 24, 2026$14.1K a month
Sep 25, 2026$14.1K a month
Sep 26, 2026not in a grossing chart
Sep 27, 2026$13.7K a month
Sep 28, 2026$13.7K a month
Sep 29, 2026not in a grossing chart
Sep 30, 2026not in a grossing chart
Oct 1, 2026not in a grossing chart
Oct 2, 2026not in a grossing chart
Oct 3, 2026not in a grossing chart
Oct 4, 2026$13.2K a month
Oct 5, 2026$13.2K a month
Oct 6, 2026$10.9K a month
Oct 7, 2026not in a grossing chart
Oct 8, 2026not in a grossing chart
Oct 9, 2026not in a grossing chart
Oct 10, 2026$10.9K a month
Oct 11, 2026$10.8K a month
Oct 12, 2026$10.8K a month
Oct 13, 2026$159.4K a month
Oct 14, 2026$12.1K a month
Oct 15, 2026$12.1K a month
Oct 16, 2026$12.1K a month
Oct 17, 2026$10.8K a month
Oct 18, 2026$10.8K a month
Oct 19, 2026$11.6K a month
Oct 20, 2026$12.1K a month
Oct 21, 2026$12.1K a month
Oct 22, 2026not in a grossing chart
The same estimate as the headline, saved every day. Best rank Sep 24, 2026: #64 Productivity · NL. Now: #63 Productivity · PL.
RATINGS IN THE CORE COUNTRIES, DAILY
Show daily values
Oct 13, 20261.3K ratings
Oct 14, 20261.3K ratings
Oct 15, 20261.3K ratings
Oct 16, 20261.3K ratings
Oct 17, 20261.3K ratings
Oct 18, 20261.3K ratings
Oct 19, 20261.3K ratings
Oct 20, 20261.3K ratings
Oct 21, 20261.3K ratings
Oct 22, 20261.3K ratings
1.3K on Oct 13, 2026, 1.3K on Oct 22, 2026. New ratings track new downloads, even outside the charts.

Money and momentum

Measured from the store, not estimated.

WHAT IT CHARGES
2 purchases listed
  • Lumo Plus (1 month)₹ 719
  • Lumo Plus (12 months)₹ 6,599
Top in-app purchases as listed on the App Store, in local prices.
REVIEW MOMENTUM
0.1 reviews / week
  • Recent reviews average3.0 stars
  • Recent 1 and 2 star share38%
From the latest 8 written reviews, covering 426 days.
RELEASE CADENCE
7 updates in 90 days
  • Typical gap between releases15 days
From the last 25 versions listed on the App Store.
RATING BREAKDOWN
18 ratings
5★56%
4★17%
3★11%
2★11%
1★6%

What users say

Latest reviews, India App Store.

★★★★★Sep 24, 2026
Good for single shot prompt

Performing well and fast for single shot prompts, but for multiple shot prompt, it’s missing the flow. Previous instructions are getting diluted.

★★★★★Jun 9, 2026
Support more file types!

Would appreciate if we are allowed to upload files in JPEG at least. Always converting to pdf is tedious.

★★★★★Nov 22, 2025
Need a proper app.

One of the best privacy preserving AI out there. I am willing to stop my Gemini Pro subscription, to shift to Lumo plus subscription by next year. But if I am going to be paying for Lumo plus, the least I can expect is a quality IOS app with all the necessary features and improvements. Not just a basic Web App!!

★★★★★Nov 3, 2025
Needs several improvements!

1. Instead of limiting chat history based on days, limit the number of chats that can be stored 2. Add support for JPG files 3. Sometimes it fails to read content from PDFs, and says that the content didn’t come through. Please fix that. 4. Add workspaces section 5. Bring a student plan also It’s one of the best privacy-preserving AIs out there, working on above mentioned points will just make it much better.

★★★★★Oct 16, 2025
No dark mode

They say they have introduced dark mode, but there is no setting to toggle it on. And it also doesn’t follow the system theme. It stays in light mode, even though my device is in dark mode

★★★★★Oct 14, 2025
Incorrect information and frequent crashes

I have been trying Lumo free to get an idea if it worth adding Lumo + . The available information is erroneous many times and lately the assistant has started to glitch and crash.

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Store screenshots

ScreenshotScreenshotScreenshotScreenshotScreenshotScreenshotScreenshotScreenshotScreenshotScreenshot

App Store ads

Apple Search Ads this app ran in the last 90 days, from Apple's public ad repository.

Apple's ad repository couldn't be reached right now. Try again later.

Growth research

Where this app is buying and earning its users. Each link opens pre filtered.

Meta Ad Library ↗Active Facebook and Instagram adsTikTok Creative Center ↗Top performing TikTok adsTikTok creators ↗Organic videos mentioning the appInstagram ↗Reels and posts under its hashtagYouTube ↗Reviews, tutorials and ShortsDeveloper site ↗Landing page and pricing

ASO keywords

Most repeated terms in the listing. Highlighted ones also appear in the title.

lumo12proton6files4zero access3images files3stay productive3ghost mode3open source3lumo proton3access3data3chats3time3stay3images3zero2encrypted2never2built2drive2quick2work2choose2fast2

What's new in 2.1.2

Fixed Saving From Chats - Files now land in Photos or Files natively on iOS instead of getting stuck in a web view.

Released Jul 23, 2025. Current version shipped Oct 20, 2026.

Store description

Lumo is a zero-access encrypted AI assistant that keeps every conversation private. Your data is never logged, shared, or used to train models. Your chats are yours, and yours alone. Built by Proton, the privacy brand trusted by over 100 million people and the team behind Proton Mail, VPN, Drive, and Pass. THOUGHTFUL HELP FOR ANY TASK Lumo handles everything from quick questions to more complex work. Choose Fast for quick answers or Thinking for multi-step reasoning. FAST, POWERFUL WEB SEARCH Get precise, real-time answers in seconds. Lumo cites live sources so you can verify facts, dig deeper, and stay current on news, events, financial data, and more. CREATE AND REFINE IMAGES AND FILES Work with images and files just by telling Lumo what you need, from generating and editing images to analyzing documents. Connect your Proton Drive account for seamless access to stored files. AI THAT EVOLVES OVER TIME Lumo gets better every time you use it. Memory retains context and preferences across sessions, and you can set tones and styles to get the exact Lumo experience you want. STAY PRODUCTIVE AND ORGANIZED Projects give you dedicated encrypted spaces for tasks that span multiple chats, files, and instructions, while Custom Lumos let you create assistants tailored for specific tasks. Switch between light and dark modes for a more comfortable experience throughout the day. GHOST MODE For conversations where you want maximum privacy, choose Ghost Mode. Chats are instantly deleted once you close them for greater peace of mind. PRIVACY YOU CAN VERIFY Lumo is founded on zero-access encryption with no server-side chat logs, and never uses your data for profit or model training. Like all Proton products, Lumo is built and hosted in Europe and is fully open-source. Lumo helps you stay productive, curious, and informed — without ever compromising your privacy. Start a confidential chat for free today. 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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Prices, ranks and reviews are per country. Revenue above is already worldwide.

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