Comparison

Encrypted Email vs PDF Masker

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

PDF Masker

Easily mask sensitive keywords in PDF files before sharing. Import PDFs, specify multiple keywords, and customize redaction colors. Export as text or image-based PDFs for secure data sharing.

Highlights
  • Import PDFs via Share menu
  • Bulk keyword redaction
  • Export as text or image PDF
  • Multiple keyword support
  • Customizable redaction color
  • Save keyword histories
Features
Read full description

Protect your sensitive information before sharing files with others. PDF Masker is a powerful security tool that lets you search and black out specific keywords across your PDF documents automatically. Import any PDF directly from your device using the Share menu. Enter your target keywords, and the app instantly hides matching text so you can send your documents safely. You can choose to export your final file as a searchable text-based PDF or as an image-based PDF. The image-based option is perfect when you want to permanently erase underlying text data so it can never be copied or recovered. Key Features - Smart Bulk Redaction: Enter a keyword and automatically mask every single match across the entire document. - Multiple Keywords Support: Separate multiple terms using spaces or commas to clear different pieces of data at once. - 100 Item History Tracker: Saves up to 100 of your frequently used keywords so you can reapply them with a single tap. - Custom Redaction Colors: Change the color of your redaction blocks from classic blackout to white or any custom tone. - Flexible File Loading: Easily load files from your system file picker, in-app web browser, or straight from other apps via the Share extension. - 100 Percent Offline Security: All processing happens locally on your phone or tablet. Your private and confidential documents are never sent to external servers. - Clean and Fast User Interface: Designed to be clean, fast, and simple for everyone, with no complex setup required. Whether you are hiding account numbers, blurred names, personal addresses, or sensitive corporate contracts, PDF Masker helps you prevent data leaks on the go.

Screenshots

Encrypted Email4 screens
PDF Masker4 screens

Verdict

The call

The clearest difference is review sentiment: Encrypted Email at 47% against PDF Masker's 0%. Encrypted Email also leads on rating (4.8 vs 2.0) and ads (none vs shown). PDF Masker's advantage is monetization model (ad-supported vs free with in-app purchases) and iOS requirement (15.0 vs 17.2). On price, in-app purchases 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 and PDF Masker sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Encrypted Email holds the better App Store score, 4.8 against 2.0. That said, the two scores are not equally well evidenced: Encrypted Email has 50K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 47% of Encrypted Email's written reviews are positive against 0% of PDF Masker's.

UpkeepUpdate frequency

Encrypted Email ships an update every 11 days, PDF Masker monthly. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

Scorecard8 real differences · 3 level
Encrypted Email versus PDF Masker: the parameters behind the verdict, then further details
ParameterEncrypted EmailPDF Masker
PriceFreeFree
Rating4.8 (50K ratings) — better2.0 (1 ratings)
Positive reviews46.6% of reviews — better0.0% of reviews
Number of ratings50K — better1
Update frequencyEvery 11 days — betterMonthly
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesAd-supported — better
Best chart rank#64 — better—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.215.0 — better
Further details — not scored
Size272 MB14 MB
Age rating4+4+
DeveloperProton AGKazuhisa Kobayashi

Customer experience

Encrypted Email

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

PDF Masker

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

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

PDF Masker

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
1 purchases

PDF Masker

One-time1
  • Remove Ads$4.99

Questions

Is Encrypted Email free?
Encrypted Email is free to download, with in-app purchases available.
Is PDF Masker free?
PDF Masker is free to download, with in-app purchases available.
Which has better reviews, Encrypted Email or PDF Masker?
Encrypted Email is rated higher. Encrypted Email averages 4.8 out of 5 from 50K ratings, while PDF Masker averages 2.0 from 1 ratings.
Do Encrypted Email or PDF Masker have ads?
PDF Masker shows ads; Encrypted Email does not.
Which is updated more often, Encrypted Email or PDF Masker?
Encrypted Email ships an update every 11 days, and PDF Masker monthly. Most recently, Encrypted Email was updated on October 28, 2026 and PDF Masker on October 24, 2026.

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