Comparison

Proton Drive vs Pi Epsilon

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

Head to head
About

Proton Drive

Securely store and back up your files and photos with end-to-end encryption. Access your content across devices, share securely with password protection, and enjoy peace of mind with Swiss privacy laws. Offers free storage with upgrade options.

Highlights
  • End-to-end encrypted storage
  • Automatic photo and video backup
  • Secure link sharing with passwords
  • PIN/biometric protection
  • Offline file access
  • File version history
Features
Read full description

Proton Drive provides private and secure storage for your files and photos. With Proton Drive you can protect important documents, automatically back up cherished memories, and access your content across devices. All Proton Drive accounts come with 5 GB of free storage and you can upgrade to up to 1 TB of storage at any time. Trusted by over 100 million users, Proton Drive gives you an end-to-end encrypted vault where only you—and the people you choose—can access your files and photos. Proton Drive features: - Secure storage - Get 5 GB of free encrypted cloud storage with no file size limits. - Share content using secure links with password and expiration settings. - Keep your files and photos safe with PIN or biometric protection. - Access important files and photos even if your device is lost or damaged. Easy to use - Automatically back up photos and videos in their original quality. - Securely organize your cherished memories into albums. - Rename, move, and delete your personal files securely within the app. - Create, edit and collaborate on docs. - View your important files and memories – even when offline. - Restore files with version history. Advanced privacy - Stay private with end-to-end encryption – even Proton can’t view your content. - Secure your metadata, including filenames, sizes, and modification dates. - Protect your content with Swiss privacy laws, the strongest in the world. - Trust in our open-source code that is public and verified by experts. Secure up to 5 GB of free storage for your personal files, photos, and videos with Proton Drive.  Stay ahead with our releases and updates by connecting with us! - LinkedIn: https://www.linkedin.com/company/protonprivacy - Instagram: https://www.instagram.com/protonprivacy/ - X/Twitter: https://x.com/ProtonDrive - Reddit: https://www.reddit.com/r/ProtonDrive/ Terms of Service: https://proton.me/legal/terms Privacy Policy: https://proton.me/legal/privacy

About

Pi Epsilon

A decentralized, anonymous, and end-to-end encrypted communication platform offering voice, text, video, and group calls. It provides robust security features and full user control over the server environment, bypassing third-party providers.

Highlights
  • Decentralized and anonymous communication
  • End-to-end encryption
  • Voice, text, and video calls
  • Group video conferencing
  • User-controlled server hosting
  • Decoy obfuscation tools
Features
Read full description

The Pi Epsilon (Π Ε) Communication Platform is a cutting edge decentralized, anonymous, end-to-end encrypted communication platform that includes voice, text, video, chat, and group video conference calls through a proprietary configuration that bypasses the usage of any third-party provider platforms. The Π Ε communication platform can reside on a dedicated obfuscated Virtual Private Server (VPS) or anywhere, resident to the customer’s location. The Π Ε Communication Platform offers one of the most protective cyber design decoy obfuscation tools from any nefarious attacker looking to obtain information of the real Π Ε communication platform. Look no further for your secure communication needs. Advantages • Decentralized, anonymous, real-time communication, end to end encryption protocol. • Customer has full control and oversite of the communication platform server. • Π Ε can reside on a dedicated Virtual Private Server, private rack server, or a physical server resident within the customer location. • No dependencies of any third-party provider and or backbone infrastructure. • Π Ε resides on a virtual dissimulated encrypted server (VDES), as a decoy obfuscation tool environment, shielding the real IP from any nefarious inquiries. • Π Ε includes voice, text, video, chat, and group video conference. • Supports the federate infrastructure, where multiple instances of Π Ε servers can communicate with each other. • Customer retains Admin console control to manage users, permissions, and resources.

Screenshots

Proton Drive4 screens
Pi Epsilon4 screens

Verdict

The call

The clearest difference is rating: Pi Epsilon at 5.0 against Proton Drive's 4.1. Pi Epsilon also leads on in-app purchases (none vs 9). Proton Drive's advantage is update cadence (fortnightly vs every 6 months) and ratings volume (1.1K vs 4). On price, ads, device support and iOS requirement 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 Drive sells 9 in-app purchases, starting at $0.99 per month. Pi Epsilon asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Pi Epsilon holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: Proton Drive has 1.1K ratings behind it against 4, so its average is the more settled of the two.

UpkeepUpdate frequency

Proton Drive ships an update fortnightly, Pi Epsilon every 6 months. The most recent releases landed on September 22, 2026 and September 17, 2026 respectively.

Scorecard5 real differences · 5 level
Proton Drive versus Pi Epsilon: the parameters behind the verdict, then further details
ParameterProton DrivePi Epsilon
PriceFreeFree
Rating4.1 (1.1K ratings)5.0 (4 ratings) — better
Positive reviews36.9% of reviews
Number of ratings1.1K — better4
Update frequencyFortnightly — betterEvery 6 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.0 — better
Further details — not scored
Size235 MB147 MB
Age rating4+4+
DeveloperProton AGChesapeake International Consulting, LLC

Customer experience

Proton Drive

All ratings1,148 ratings
Positive74.2%
Neutral9.0%
Negative16.8%
Written reviews876 reviews
Positive36.9%
Neutral21.9%
Negative41.2%

Pi Epsilon

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Proton Drive

Reported bugs

4 issues
  • Frequent crashes and errors
  • Inconsistent file syncing across devices
  • Unable to access files uploaded from desktop
  • Issues with offline file access

Requested features

4 requests
  • Automatic photo/video backup
  • Ability to edit documents within the app
  • Seamless integration with other apps for file sharing
  • Linux desktop client

Pi Epsilon

Not enough reviews yet to summarise bugs or requests.

In-app purchases

9 purchases

Proton Drive

Subscriptions7
  • Drive Lite 1 month$0.991 Month
  • Drive Plus 1 month$4.991 Month
  • Drive Plus 1 TB (1 month)$9.991 Month
Show 4 more
  • Proton Unlimited 1 month$14.991 Month
  • Drive Plus 1 year$47.901 Year
  • Drive Plus 1 TB (1 year)$95.991 Year
  • Proton Unlimited 1 year$119.001 Year
One-time2
  • Drive Plus$59.99
  • Proton Unlimited$149.99
None

Pi Epsilon

No in-app purchases

Questions

Is Proton Drive free?
Proton Drive is free to download, with in-app purchases available.
Is Pi Epsilon free?
Pi Epsilon is free to download, with no in-app purchases.
Which has better reviews, Proton Drive or Pi Epsilon?
Pi Epsilon is rated higher. Proton Drive averages 4.1 out of 5 from 1.1K ratings, while Pi Epsilon averages 5.0 from 4 ratings.
Do Proton Drive or Pi Epsilon have ads?
Neither Proton Drive nor Pi Epsilon shows ads.
Which is updated more often, Proton Drive or Pi Epsilon?
Proton Drive ships an update fortnightly, and Pi Epsilon every 6 months. Most recently, Proton Drive was updated on September 22, 2026 and Pi Epsilon on September 17, 2026.

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