Comparison

Lumo AI by Proton vs Scrum

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Lumo AI by Proton

This AI assistant prioritizes your privacy, offering help with productivity, curiosity, and staying informed. Developed by the team behind trusted encrypted services, it ensures your data remains secure.

Highlights
  • Privacy-first AI assistant
  • Boost productivity
  • Satisfy curiosity
  • Stay informed
  • Secure data handling
Read full 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

About

Scrum

Features
Read full description

Get started in seconds Share a room code with your team and you're ready to estimate. Anyone can join from iOS or the web — no sign-up required. Vote together, in real time All votes sync instantly across every device. Reveal cards simultaneously to avoid anchoring bias and keep your estimates honest. Built for how real teams work - Queue up your backlog and work through stories one by one - Choose your estimation scale: Fibonacci, T-shirt sizes, and more - Host controls let you manage participants and keep sessions on track - Spectator mode for stakeholders who want to watch without voting - Session history keeps a record of every round's agreed points Works everywhere Rooms created on scrum-points.com are shared with your mobile team, and vice versa — everyone stays in sync whether they're on desktop, iOS

Screenshots

Lumo AI by Proton4 screens
Scrum4 screens

Verdict

The call

The clearest difference is in-app purchases: Scrum at none against Lumo AI by Proton's 2. Scrum also leads on iOS requirement (15.1 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Lumo AI by Proton sells 2 in-app purchases, starting at $12.99 per month. Scrum asks for nothing beyond the download.

UpkeepUpdate frequency

Lumo AI by Proton ships an update every 11 days, Scrum weekly. The most recent releases landed on November 10, 2026 and October 13, 2026 respectively.

Scorecard2 real differences · 8 level
Lumo AI by Proton versus Scrum: the parameters behind the verdict, then further details
ParameterLumo AI by ProtonScrum
PriceFreeFree
Rating3.9 (561 ratings) — better—
Positive reviews45.9% of reviews—
Number of ratings561 — better—
Update frequencyEvery 11 daysWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.615.1 — better
Further details — not scored
Size103 MB41 MB
Age rating4+4+
DeveloperProton AGMatthew Hall

Bugs and requests

Lumo AI by Proton

Reported bugs

2 issues
  • Slow sign-in page
  • Lack of real-time data access

Requested features

5 requests
  • Dynamic Type support for adjustable font size
  • Secure access to Proton Drive files
  • Ghost mode to ensure no chat history is saved
  • Intuitive history clearing option
  • App mode

Scrum

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Lumo AI by Proton

Subscriptions2
  • Lumo Plus (1 month)$12.991 Month
  • Lumo Plus (12 months)$119.991 Year
None

Scrum

No in-app purchases

Questions

Is Lumo AI by Proton free?
Lumo AI by Proton is free to download, with in-app purchases available.
Is Scrum free?
Scrum is free to download, with no in-app purchases.
Do Lumo AI by Proton or Scrum have ads?
Neither Lumo AI by Proton nor Scrum shows ads.
Which is updated more often, Lumo AI by Proton or Scrum?
Lumo AI by Proton ships an update every 11 days, and Scrum weekly. Most recently, Lumo AI by Proton was updated on November 10, 2026 and Scrum on October 13, 2026.

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