Comparison

Proton Mail vs Rool

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

Head to head
About

Proton Mail

This encrypted email service from Switzerland prioritizes user privacy with end-to-end encryption. It offers robust security features to protect your communications from phishing, spam, and tracking, allowing you to manage your inbox with ease.

Highlights
  • End-to-end encryption
  • Password-protected emails
  • Multiple account support
  • Inbox organization (folders, labels)
  • Dark mode
  • Phishing and spam protection
Read full description

Keep your conversations private. Proton Mail is encrypted email from Switzerland. Used by millions worldwide, our all-new email app protects your communications and has everything you need to easily manage your inbox. The Wall Street Journal says: “Proton Mail offers encrypted email, which makes it virtually impossible for anyone to read it except the sender and the recipient.” With the all-new Proton Mail app, you can: • Create a @proton.me or @protonmail.com email address • Send and receive encrypted emails and attachments with ease • Switch between multiple Proton Mail accounts • Easily manage your email with conversations • Keep your inbox tidy and clean with folders, labels and simple swipe-gestures • Receive new email notifications • Send Password-protected Emails to anyone • Keep important emails in focus with automatic, private categories • Enjoy your inbox in dark mode Why use Proton Mail? • Easy to use — Our all-new app has been redesigned to make it easier to read, organize, and write your emails. • Your inbox is yours — We don’t spy on your communications to show you targeted ads. Your inbox, your rules. • Rigorous encryption — Your entire inbox is secured, on all your devices. No one can read your emails but you. Proton is privacy, guaranteed by end-to-end and zero-access encryption. • Unmatched protection — We offer strong phishing, spam, and spying/tracking protection for all your communications. Industry Leading Security Features Messages are stored on Proton Mail servers using end-to-end encryption at all times and are transmitted securely between Proton servers and user devices. This largely eliminates the risk of message interception. Zero Access to Your Email Content Proton Mail's zero access architecture means that your data is encrypted in a way that makes it inaccessible to us. Data is encrypted on the client side using an encryption key that Proton does not have access to. This means we don't have the technical ability to decrypt your messages. Open-Source Cryptography Proton Mail's open-source software has been thoroughly vetted by security experts from around the world to ensure the highest levels of protection. Proton Mail only uses secure implementations of AES, RSA, along with OpenPGP, while all of the cryptographic libraries used are open source. By using open-source libraries, Proton Mail can guarantee that the encryption algorithms used do not have clandestinely built-in back doors. Proton Mail in the press: “Proton Mail is a Gmail-like email system which uses end-to-end encryption, making it impossible for outside parties to monitor.” Forbes “A new email service being developed by a group who met at MIT and CERN promises to bring secure, encrypted email to the masses and keep sensitive information away from prying eyes.” Huffington Post Follow Proton on social media for all the latest news and offers: Facebook: /proton Twitter: @protonprivacy Reddit: /protonmail Instagram: /protonprivacy Our open-source code base: https://github.com/ProtonMail EULA: http://www.apple.com/legal/itunes/appstore/dev/stdeula

About

Rool

This app provides a private cloud-based AI assistant to help you with tasks, projects, and file management. It allows you to chat with an AI, create and edit files, generate content, and collaborate with others in isolated project environments.

Highlights
  • Private cloud computer
  • AI-powered task completion
  • File upload and management
  • Content generation (text, code, images)
  • Persistent project memory
  • Collaborative work environments
  • Data export
Features
Read full description

Rool gives you a private computer in the cloud that you can talk to. Ask questions, create files, solve problems, and work through projects with an AI that builds on what you’ve already done. Each Rool Machine brings your conversations, files, and memory together. It can run software and carry out tasks with multiple steps, helping you go from an idea to finished work through a familiar chat. WORK WITH YOUR FILES Upload documents, PDFs, images, spreadsheets, and code. Ask Rool to read, edit, organise, or create files for you. Turn notes into a report, work through calculations, or build an interactive HTML page. CREATE AND EXPLORE Draft ideas, generate images, write code, and compare different approaches. Refine the results through conversation and keep what you create alongside the rest of your project. BUILD ON YOUR WORK Rool connects your notes, conversations, files, and decisions through persistent memory. Return to a project with its context still available, and ask your AI to use earlier work when planning what comes next. MAKE ROOM FOR DIFFERENT PROJECTS Use separate Machines for personal projects, work, or shared interests. Each has its own files and memory, helping you keep different parts of your life organised. WORK TOGETHER Invite others into a Machine to collaborate with the same AI, files, and project history. Changes sync in real time, so everyone can work from the same information. PRIVATE BY DESIGN Your work is stored in your own isolated Machine, hosted in the EU. Rool has no ads and does not sell your data or share it for third-party AI training. You can export your data whenever you choose. AI INCLUDED Advanced AI is built in. Rool automatically selects models for the task, so you can focus on what you want to do. Start with a free plan that includes AI access, persistent memory, and file storage. Paid plans offer higher usage and storage limits. Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Proton Mail4 screens
Rool4 screens

Verdict

The call

The clearest difference is ratings volume: Proton Mail at 48K against Rool's 2. Proton Mail also leads on chart position (#65 vs unranked). Rool's advantage is rating (5.0 vs 4.8) and iOS requirement (15.0 vs 17.2). On price, update cadence, ads and in-app purchases 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. Proton Mail sells 6 in-app purchases, starting at $5.99 per month and Rool sells 2 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Rool holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Proton Mail has 48K ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Proton Mail ships an update every 10 days, Rool fortnightly. The most recent releases landed on October 18, 2026 and October 2, 2026 respectively.

Scorecard4 real differences · 7 level
Proton Mail versus Rool: the parameters behind the verdict, then further details
ParameterProton MailRool
PriceFreeFree
Rating4.8 (48K ratings)5.0 (2 ratings) — better
Positive reviews46.6% of reviews—
Number of ratings48K — better2
Update frequencyEvery 10 days — betterFortnightly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
Best chart rank#65 — better—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.215.0 — better
Further details — not scored
Size272 MB11 MB
Age rating4+17+
DeveloperProton AGLightpost One Limited

Customer experience

Proton Mail

All ratings48,309 ratings
Positive94.4%
Neutral2.1%
Negative3.5%
Written reviews1,671 reviews
Positive46.6%
Neutral13.6%
Negative39.8%

Rool

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Proton Mail

Reported bugs

3 issues
  • Login issues and lost email data
  • Unreliable push notifications
  • Inconsistent user experience between app and web

Requested features

4 requests
  • Conversation threading and email previews
  • Customizable notification sounds
  • Offline email access
  • Improved syncing across devices

Rool

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

Proton Mail

Subscriptions4
  • Mail Plus 1 month1 Month trial$5.991 Month
  • Unlimited 1 month$14.991 Month
  • Mail Plus 12 months$47.901 Year
Show 1 more
  • Unlimited 1 year$119.001 Year
One-time2
  • Mail Plus (1 year)$59.99
  • Proton Unlimited$149.99
2 purchases

Rool

Subscriptions2
  • Plus$12.991 Month
  • Pro$29.991 Month

Questions

Is Proton Mail free?
Proton Mail is free to download, with in-app purchases available.
Is Rool free?
Rool is free to download, with in-app purchases available.
Which has better reviews, Proton Mail or Rool?
Rool is rated higher. Proton Mail averages 4.8 out of 5 from 48K ratings, while Rool averages 5.0 from 2 ratings.
Do Proton Mail or Rool have ads?
Neither Proton Mail nor Rool shows ads.
Which is updated more often, Proton Mail or Rool?
Proton Mail ships an update every 10 days, and Rool fortnightly. Most recently, Proton Mail was updated on October 18, 2026 and Rool on October 2, 2026.

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