EML Viewer vs Cryptomator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EML Viewer
Easily view saved emails in EML format directly on your iOS device. Open attachments, share them with other applications, or print them. You can also compose a new email using the content of an EML file.
- View EML files
- Access attachments
- Share attachments
- Print attachments
- Compose new emails from EML
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View .EML files on your iOS device, including attachments within them. These are usually emails saved in the EML format. Tap on an EML file in another app, "Open In..." and select EML Viewer to view your saved email. You may tap "open a sample EML" to see an example email open up. Attachments may be shared with other apps or printed. Tap the compose icon to open your EML as a new Mail message This app is for .EML files. If you also need to view Outlook .MSG files, check out our related apps MSG View and Message Viewer Pro on the App Store.
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/
Screenshots
Verdict
The clearest difference is price: Cryptomator at Free against EML Viewer's $1.99. Cryptomator also leads on rating (4.4 vs 3.0) and ratings volume (446 vs 21). EML Viewer's advantage is in-app purchases (none vs 5). On 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
Cryptomator is free to download; EML Viewer costs $1.99 up front. Cryptomator sells 5 in-app purchases, starting at $9.99 per year. EML Viewer asks for nothing beyond the download.
Cryptomator holds the better App Store score, 4.4 against 3.0. That said, the two scores are not equally well evidenced: Cryptomator has 446 ratings behind it against 21, so its average is the more settled of the two. Written reviews point the same way: 49% of EML Viewer's written reviews are positive against 63% of Cryptomator's.
EML Viewer ships an update every 2 months, Cryptomator every 3 weeks. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.
| Parameter | EML Viewer | Cryptomator |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 3.0 (21 ratings) | 4.4 (446 ratings) — better |
| Positive reviews | 49.0% of reviews | 62.8% of reviews — better |
| Number of ratings | 21 | 446 — better |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 10 MB | 122 MB |
| Age rating | 4+ | 4+ |
| Developer | Matrix Logic Corporation | Skymatic GmbH |
Customer experience
EML Viewer
Cryptomator
User reviews
EML Viewer
From 21 App Store ratingsWhat we love
- ✅ Opens .eml files
- 👍 Works as advertised
- 🚀 Quick updates and support
- ✨ Displays attachments
- 💡 Handles PEC emails
Room to improve
- 🐛 App crashes frequently
- 🐛 Unusable due to crashes
- 🐛 Does not read digitally signed emails
- 🐛 Does not open files over 2MB
- 🐛 Low memory errors
Cryptomator
From 446 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
Bugs and requests
EML Viewer
Reported bugs
34 issues- App crashes frequently
- App is unusable due to crashes
- Does not read digitally signed emails
- Does not open files over 2MB
- Low memory errors
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- Poor formatting and link browsing
- Does not download attached images
- Only displays email header
- Does not support dark mode override
- Clumsy to open files
- Does not open attachments
- Does not support Chinese characters
- Does not display formatted text
- Cannot open EML files from Calendar app
- Does not support Reply and Forward
- Does not open attachments from PEC
- Blank screen on opening
- Crashes on some EML files
- Does not show up in share menu
- Instructions not clear
- Money wasted
- Does not open EML files
- Garbled Japanese characters
- Does not open PDF attachments
- Crashes browser
- Does not open EML files on iPad
- Does not support ISO2022JP
- Does not display To/Cc Japanese names correctly
- Price is slightly high
- Does not support Outlook MSG to EML conversion
- Does not support EML files from Lotus Notes
- Does not allow printing or PDF export
- Forwarding not compatible with default mail apps
- Does not display external images by default
Requested features
12 requests- Dark mode option
- Option to create folders
- Ability to print messages
- Forwarding function
- Prevent external images from loading by default
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- Support for ISO2022JP character encoding
- Support for Lotus Notes EML files
- Improved handling of To/Cc Japanese names
- Improved link browsing controls
- Support for digitally signed emails
- Support for emails over 2MB
- Improved memory management
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
In-app purchases
EML Viewer
No 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









