Comparison

Encrypted Email 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

Encrypted Email

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

Proton Mail is the encrypted email app trusted by over 100 million people. Get a secure, private email address protected by end-to-end encryption, with no ads, no AI training and no inbox scanning. Based in Switzerland and protected by some of the world's strictest privacy laws. Your inbox, your rules. Why choose Proton Mail for secure email • Free encrypted email: create a free @proton.me or @protonmail.com email address • Password-protected emails: send encrypted emails to anyone, even people who don't use Proton • Spam, phishing and tracker protection: with built-in spam filters, phishing alerts and email tracker blocking • Organize your inbox: with folders, labels and simple swipe gestures • Offline mode: read, write and organize emails offline, and everything syncs when you're back online • Private categories: keep important emails in focus with automatic, private categories • Multiple accounts: switch between multiple Proton Mail accounts in one secure email app • Get up to 1 GB of free email storage, or up to 15 GB with Mail Plus Secure email with encryption Everything in your inbox is stored with zero-access and end-to-end encryption, emails between Proton users can only be read by you and your recipient. Proton Mail can't read or scan your messages. Our open-source apps use OpenPGP encryption and are independently audited. A private alternative to temp mail Need a temp mail address for a sign-up? Create up to 10 free hide-my-email aliases on the web. They forward to your inbox, keep your real email address private, and can be disabled or deleted at any time. Switch to secure email Easy Switch moves your email to your new secure inbox with no manual exporting or importing. Connect Gmail to use your Gmail address alongside your Proton email in one secure inbox, or set up auto-forwarding from as many Gmail accounts as you like. The Wall Street Journal: "Proton Mail offers encrypted email, which makes it virtually impossible for anyone to read it except the sender and the recipient." How can Proton Mail be free? We believe everyone deserves private email. Free accounts are funded by our community of paid subscribers. Upgrade for more email storage, more addresses and custom domains. Follow Proton for the latest news and offers: Facebook: /proton X: @protonprivacy Reddit: /protonmail Instagram: /protonprivacy Learn more: https://proton.me/mail Our open-source code: https://github.com/ProtonMail

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

Encrypted Email4 screens
Pi Epsilon4 screens

Verdict

The call

The clearest difference is in-app purchases: Pi Epsilon at none against Encrypted Email's 6. Pi Epsilon also leads on rating (5.0 vs 4.8) and iOS requirement (15.0 vs 17.2). Encrypted Email's advantage is update cadence (every 11 days vs every 6 months) and ratings volume (50K vs 5). 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. Encrypted Email sells 6 in-app purchases, starting at $5.99 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 4.8. That said, the two scores are not equally well evidenced: Encrypted Email has 50K ratings behind it against 5, so its average is the more settled of the two.

UpkeepUpdate frequency

Encrypted Email ships an update every 11 days, Pi Epsilon every 6 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard7 real differences · 4 level
Encrypted Email versus Pi Epsilon: the parameters behind the verdict, then further details
ParameterEncrypted EmailPi Epsilon
PriceFreeFree
Rating4.8 (50K ratings)5.0 (5 ratings) — better
Positive reviews46.6% of reviews—
Number of ratings50K — better5
Update frequencyEvery 11 days — betterEvery 6 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#62 — better—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.215.0 — better
Further details — not scored
Size272 MB147 MB
Age rating4+4+
DeveloperProton AGChesapeake International Consulting, LLC

Customer experience

Encrypted Email

All ratings49,380 ratings
Positive94.4%
Neutral2.1%
Negative3.4%
Written reviews1,688 reviews
Positive46.6%
Neutral13.7%
Negative39.6%

Pi Epsilon

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

Bugs and requests

Encrypted Email

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

Pi Epsilon

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

Encrypted Email

Subscriptions4
  • Mail Plus 1 month$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

Pi Epsilon

No in-app purchases

Questions

Is Encrypted Email free?
Encrypted Email 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, Encrypted Email or Pi Epsilon?
Pi Epsilon is rated higher. Encrypted Email averages 4.8 out of 5 from 50K ratings, while Pi Epsilon averages 5.0 from 5 ratings.
Do Encrypted Email or Pi Epsilon have ads?
Neither Encrypted Email nor Pi Epsilon shows ads.
Which is updated more often, Encrypted Email or Pi Epsilon?
Encrypted Email ships an update every 11 days, and Pi Epsilon every 6 months. Most recently, Encrypted Email was updated on October 25, 2026 and Pi Epsilon on October 24, 2026.

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