Comparison

Pi Epsilon vs Proton Pass

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

Head to head
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.

About

Proton Pass

Securely manage your online credentials with end-to-end encryption. This free password manager offers autofill, 2FA code generation, email alias creation, and data breach monitoring across all your devices. Protect your digital identity with robust Swiss privacy laws.

Highlights
  • Autofill logins
  • Store unlimited passwords
  • Generate 2FA codes
  • Create email aliases
  • Data Breach Monitoring
  • Secure sharing
  • End-to-end encryption
Features
Read full description

Get Proton Pass, the free password manager created by the team behind Proton Mail. It’s open source, end-to-end encrypted, and protected by Swiss privacy laws. Secure your online identity with Proton Pass. Pass has no ads or data collection and is free forever on all your devices. Create and store unlimited passwords on unlimited devices, autofill logins, generate 2FA codes, create email aliases, and more. WITH PROTON PASS YOU CAN: • Sign in faster with Proton Pass autofill: You no longer need to copy and paste your username and password with our advanced autofill technology. • Store and auto-sync unlimited logins on unlimited devices: Create, store, and manage your credentials from anywhere with our browser extension and mobile apps. • Share any data stored in Proton Pass securely: Share passwords, usernames, credit cards and notes securely with trusted contacts. Your data stays end-to-end encrypted, and you can revoke access anytime. • Enhance your online security: Identify vulnerable accounts with Data Breach Monitoring and Password Health. • Access your data from anywhere, on any device, with seamless synchronization across all your platforms." • Protect your online identity: Whenever you sign up for a new online account, automatically create an alias to keep your actual email address protected. • Add security layers to your accounts: Protect your account with 2FA authentication and custom PIN protection. Activate Proton Sentinel for advanced security against hackers. PROTON PASS FEATURES INCLUDE: • Built in password generator: Generate unlimited secure passwords and safely store them for all your accounts. Avoid weak passwords and never worry about forgetting the complex passwords again. • Built in 2FA authenticator: Enhance your accounts security with 2FA codes, easily generated within the app for any website and autofill when you log in. • Secure Vaults: Organize & share login information, payment details and notes into secure vaults, which you can share with family, friends, or co-workers. • Email Aliases: With Hide-my-email feature, protect your identity by creating email aliases, preventing your personal email address from being disclosed or leaked. • Credit Card Support: Securely store your credit card details for quick access. • Pass Monitor: Identifies weak or reused passwords, inactive 2FA fields and sends immediate alerts on data leaks with dark web monitoring. • End-to-End Encryption: All your login data is protected with end-to-end encryption, ensuring that only you can access it. • Biometric Login Access: Add an extra layer of security to Proton Pass by using your fingerprint or face to unlock the app. • Spotlight Search: Easily find your information, with one click via iPhone Spotlight Search. • Bookmark items: Pin frequently needed items to the top of your Proton Pass app and browser extension to easily find them. • Bulk edition: Activate bulk edition to handle items in a hassle-free way. • Item history: Keep track of your item changes with item history, knowing when you last changed any login information. • Encrypted Notes: Safely store sensitive information within the app, accessible only to you. • Offline Access: Access your stored passwords and notes in Pass from anywhere, even when your device has no internet connection. • Open Source: Trust is built on transparency. Proton Pass is open source, allowing you to verify our security claims for yourself, like all Proton services. • Easily import passwords: Easily import passwords from any password manager or CSV file. • No Ads or Data Collection 
 For more information, visit: https://proton.me/pass Our open-source code base: https://github.com/protonpass/ios-pass Terms of service: https://proton.me/legal/terms Learn more about Proton: https://proton.me

Screenshots

Pi Epsilon4 screens
Proton Pass4 screens

Verdict

The call

The clearest difference is in-app purchases: Pi Epsilon at none against Proton Pass's 5. Pi Epsilon also leads on rating (5.0 vs 4.8) and iOS requirement (15.0 vs 17.0). Proton Pass's advantage is update cadence (every 3 weeks vs every 6 months) and ratings volume (7.8K vs 4). On price, 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. Proton Pass sells 5 in-app purchases, starting at $35.90 per year. 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 4.8. That said, the two scores are not equally well evidenced: Proton Pass has 7.8K ratings behind it against 4, so its average is the more settled of the two.

UpkeepUpdate frequency

Pi Epsilon ships an update every 6 months, Proton Pass every 3 weeks. The most recent releases landed on September 17, 2026 and September 24, 2026 respectively.

Scorecard6 real differences · 4 level
Pi Epsilon versus Proton Pass: the parameters behind the verdict, then further details
ParameterPi EpsilonProton Pass
PriceFreeFree
Rating5.0 (4 ratings) — better4.8 (7.8K ratings)
Positive reviews67.0% of reviews
Number of ratings47.8K — better
Update frequencyEvery 6 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size147 MB246 MB
Age rating4+4+
DeveloperChesapeake International Consulting, LLCProton AG

Customer experience

Pi Epsilon

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

Proton Pass

All ratings7,777 ratings
Positive96.5%
Neutral1.5%
Negative2.1%
Written reviews572 reviews
Positive67.0%
Neutral10.0%
Negative23.1%

Bugs and requests

Pi Epsilon

Not enough reviews yet to summarise bugs or requests.

Proton Pass

Reported bugs

4 issues
  • Access token issues
  • Freezing and crashing
  • Compatibility problems with certain apps and websites
  • Randomly logging out users

Requested features

8 requests
  • Ability to share passwords with non-Pass users
  • Password strength indicator
  • Passkey login support
  • Easier password generator access
  • More formatting options for notes
Show 3 more
  • Support for storing documents and cards
  • Safari extension
  • Desktop app

In-app purchases

None

Pi Epsilon

No in-app purchases

5 purchases

Proton Pass

Subscriptions2
  • Pass Plus (12 months)$35.901 Year
  • Proton Unlimited 12 months$119.991 Year
One-time3
  • Pass Plus (1 year) (Promo)$15.49
  • Pass Plus (1 year)$59.99
  • Proton Unlimited$149.99

Questions

Is Pi Epsilon free?
Pi Epsilon is free to download, with no in-app purchases.
Is Proton Pass free?
Proton Pass is free to download, with in-app purchases available.
Which has better reviews, Pi Epsilon or Proton Pass?
Pi Epsilon is rated higher. Pi Epsilon averages 5.0 out of 5 from 4 ratings, while Proton Pass averages 4.8 from 7.8K ratings.
Do Pi Epsilon or Proton Pass have ads?
Neither Pi Epsilon nor Proton Pass shows ads.
Which is updated more often, Pi Epsilon or Proton Pass?
Pi Epsilon ships an update every 6 months, and Proton Pass every 3 weeks. Most recently, Pi Epsilon was updated on September 17, 2026 and Proton Pass on September 24, 2026.

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