Cryptomator vs eM Client
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cryptomator
Encrypt your sensitive data stored in cloud services with this open-source tool. It allows you to create secure vaults with passwords, accessible only by you, and integrates seamlessly with your device's file system. Protect your privacy and ensure your data remains confidential.
- Cloud data encryption
- Password-protected vaults
- Face ID/Touch ID unlock
- Files app integration
- Compatible with major cloud services
- Open-source software
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Take the security of your data into your own hands. Cryptomator encrypts your files before they reach the cloud — so only you hold the key. Not your cloud provider, not us, no one. Most cloud providers encrypt your data only during transmission, or they keep the decryption keys themselves — keys that can be stolen, copied, or misused. With Cryptomator, the key to your data stays in your hands. EASY TO USE Cryptomator is a simple tool for digital self-defense. Protect your cloud data yourself, independently. • Assign a password to a folder — we call it a vault. That's all: no key creation, no registration, no configuration • Unlock vaults with Face ID / Touch ID • Fully integrated into the Files app — browse and open your encrypted files right where you already manage them • Everything you save into a vault is encrypted automatically COMPATIBLE Cryptomator works with the most commonly used cloud storages and is available for all major operating systems. • Compatible with iCloud Drive, Dropbox, Google Drive, OneDrive, SharePoint (incl. Microsoft Teams), pCloud, Box, WebDAV- and S3-based cloud storage services • Create vaults in any location via other File Providers (third-party apps must support this) • Access the same vaults across all your mobile devices and computers SECURE & TRUSTWORTHY You don't have to trust Cryptomator blindly, because it is open source software — everyone can see the code: https://github.com/cryptomator/ios • No backdoors and no expiration date, thanks to open source • File content and filename encryption with AES and 256 bit key length • Vault password secured with scrypt for enhanced brute-force resistance • Independently audited by security researchers; crypto implementation publicly documented If someone looks into the folder in your cloud, they cannot draw any conclusions about your data. AWARD-WINNING Cryptomator received the CeBIT Innovation Award 2016 for Usable Security and Privacy. CRYPTOMATOR COMMUNITY Join the Cryptomator Community and participate in the conversations with other Cryptomator users: • Community: https://community.cryptomator.org • Mastodon: @cryptomator@mastodon.online --- Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
eM Client
This app unifies email, calendar, tasks, contacts, and notes into a single, AI-enhanced platform. It offers advanced features typically found on desktop, including instant message translation and robust encryption, for seamless management of multiple accounts on your iPhone and iPad.
- AI-enhanced email drafting and replies
- Unified inbox for email, calendar, tasks, contacts, and notes
- Instant message translation
- PGP and S/MIME encryption
- Quick import from desktop app
- Mail-tracking pixel detection
- Snooze and Undo Send features
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These features include: • Super easy setup including quick import from the desktop app via QR code • AI Support for replies and email drafting • Emails, calendars, tasks, contacts and notes all in one place • Favorite, Global, and search folders to easily manage multiple accounts • Instant message translation • PGP and S/MIME encryption • Tags and Gmail labels support to sort and color-code your messages • Signatures you can choose from and assign to your accounts • QuickText: snippets of text you can quickly insert into your emails • Templates • Messages grouped into conversations • Advanced privacy options • Mail-Tracking pixel detection • Snooze • Watch for reply • Undo Send • Password protection • Online meetings integration • Cloud storage providers integration • Mobile device management (MDM) support and more
Screenshots
Verdict
The clearest difference is rating: Cryptomator at 4.4 against eM Client's 3.7. Cryptomator also leads on ratings volume (438 vs 49). eM Client's advantage is in-app purchases (none vs 5) and update cadence (every 10 days vs every 3 weeks). 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
Both are free to download. Cryptomator sells 5 in-app purchases, starting at $9.99 per year. eM Client asks for nothing beyond the download.
Cryptomator holds the better App Store score, 4.4 against 3.7. That said, the two scores are not equally well evidenced: Cryptomator has 438 ratings behind it against 49, so its average is the more settled of the two.
Cryptomator ships an update every 3 weeks, eM Client every 10 days. The most recent releases landed on October 23, 2026 and October 22, 2026 respectively.
| Parameter | Cryptomator | eM Client |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (438 ratings) — better | 3.7 (49 ratings) |
| Positive reviews | 62.8% of reviews | — |
| Number of ratings | 438 — better | 49 |
| Update frequency | Every 3 weeks | Every 10 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 122 MB | 178 MB |
| Age rating | 4+ | 4+ |
| Developer | Skymatic GmbH | eM Client |
Customer experience
Cryptomator
eM Client
User reviews
Cryptomator
From 438 App Store ratingsWhat we love
- 🚀 Seamless integration with Files app
- 🔒 Robust encryption and security
- 👍 Easy to use and navigate
- 🚀 Convenient cloud storage access
- 💡 Useful for privacy-conscious users
Room to improve
- 🐛 Occasional sync and upload issues
- 🐛 Compatibility problems with some cloud services
- 🐛 Unreliable file access and management
- 🔋 High battery consumption reported
eM Client
From 49 App Store ratingsWhat we love
- 🚀 Reliable and customizable
- 🔒 Great privacy and security features
- 👍 Clean and intuitive interface
- 🚀 Smooth and fast performance
- 👍 Seamless sync between desktop and mobile
Room to improve
- 🐛 Slow email sync and loading issues
- 🐛 Unreliable push notifications and badge counts
- 🐛 Inconsistent behavior compared to other email apps
- 🐛 Bugs and glitches, especially in the initial release
- 🔋 High battery consumption
Bugs and requests
Cryptomator
Reported bugs
4 issues- Vault password change issues
- Files disappearing or becoming inaccessible
- Freezing and crashes on certain devices
- Compatibility problems with latest iOS versions
Requested features
4 requests- Automatic vault locking option
- Improved search and file management functionality
- Support for more cloud storage providers
- Offline file access and editing
eM Client
Reported bugs
4 issues- Emails not sending immediately
- Drafts not visible or editable
- Inconsistent behavior when switching between folders
- Trouble signing in to multiple Google accounts
Requested features
6 requests- Calendar integration
- Improved background refresh and sync
- Custom notification sounds
- Ability to sort emails by sender
- More customization options
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- Actions from notifications (archive, mark as read, etc.)
In-app purchases
Cryptomator
- Full Version$9.991 Year
- 30-Day TrialFree
- Free UpgradeFree
- Paid Upgrade$2.99
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- Full Version$19.99
eM Client
No in-app purchases









