Comparison

Proton Mail vs InvenTree

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

InvenTree

Manage your inventory and stock control with this mobile application. It offers powerful, lightning-fast inventory knowledge in your pocket through tightly integrated barcode scanning.

Highlights
  • Inventory management
  • Stock control database integration
  • Barcode scanning
  • Pocket inventory knowledge
  • Native iOS integration
Features
Read full description

This iOS app integrates natively with the InvenTree open source inventory management and stock control database. With tightly integrated barcode scanning functionality, the app provides powerful, lightning fast inventory knowledge in your pocket.

Screenshots

Proton Mail4 screens
InvenTree4 screens

Verdict

The call

The clearest difference is review sentiment: InvenTree at 100% against Proton Mail's 47%. InvenTree also leads on in-app purchases (none vs 6) and iOS requirement (15.6 vs 17.2). Proton Mail's advantage is price (Free vs $7.99) and rating (4.8 vs 3.7). On update cadence, ads, chart position 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

Proton Mail is free to download; InvenTree costs $7.99 up front. Proton Mail sells 6 in-app purchases, starting at $5.99 per month. InvenTree asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Proton Mail holds the better App Store score, 4.8 against 3.7. That said, the two scores are not equally well evidenced: Proton Mail has 49K ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 47% of Proton Mail's written reviews are positive against 100% of InvenTree's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Proton Mail ships an update every 10 days, InvenTree weekly. The most recent releases landed on October 20, 2026 and October 10, 2026 respectively.

Scorecard7 real differences · 4 level
Proton Mail versus InvenTree: the parameters behind the verdict, then further details
ParameterProton MailInvenTree
PriceFree — better$7.99
Rating4.8 (49K ratings) — better3.7 (3 ratings)
Positive reviews46.6% of reviews100.0% of reviews — better
Number of ratings49K — better3
Update frequencyEvery 10 daysWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
Best chart rank#68 — better#146
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.215.6 — better
Further details — not scored
Size272 MB58 MB
Age rating4+4+
DeveloperProton AGOliver Walters

Customer experience

Proton Mail

All ratings48,309 ratings
Positive94.4%
Neutral2.1%
Negative3.5%
Written reviews1,677 reviews
Positive46.6%
Neutral13.7%
Negative39.7%

InvenTree

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews1 reviews
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

InvenTree

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
None

InvenTree

No in-app purchases

Questions

Is Proton Mail free?
Proton Mail is free to download, with in-app purchases available.
Is InvenTree free?
InvenTree costs $7.99, with no in-app purchases.
Which has better reviews, Proton Mail or InvenTree?
Proton Mail is rated higher. Proton Mail averages 4.8 out of 5 from 49K ratings, while InvenTree averages 3.7 from 3 ratings.
Do Proton Mail or InvenTree have ads?
Neither Proton Mail nor InvenTree shows ads.
Which is updated more often, Proton Mail or InvenTree?
Proton Mail ships an update every 10 days, and InvenTree weekly. Most recently, Proton Mail was updated on October 20, 2026 and InvenTree on October 10, 2026.
Which is more popular, Proton Mail or InvenTree?
Proton Mail currently peaks at #68 in the App Store charts, and InvenTree at #146. Chart position reflects recent download velocity rather than total install base.

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