Fastmail vs Reddcrypt
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fastmail
Manage your email, contacts, and calendar with a privacy-focused service. Offers powerful search, inbox decluttering tools, and customizable gestures for efficient communication. Seamlessly syncs across devices and supports open standards.
- Offline access to email
- Powerful search with refinement
- Inbox decluttering tools
- Customizable swipe gestures
- Seamless calendar syncing
- Shared address books
- Privacy-first, no ads or tracking
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Email, contacts and calendars made better Fastmail gives you full control of your communication, with speed, privacy, and tools that work the way you do. The New York Times says: ”If you want something easy to use that isn’t tied to one of the big tech giants, Fastmail is a great option.” Do more with email • Stay connected anywhere – Read, draft, and search offline. • Powerful search – Find anything fast, even inside attachments. Plus, use the Search Refinement Toolbar to quickly add, remove, or adjust filters. • Declutter your inbox – Snooze emails, mute threads, block spam, and unsubscribe easily, and set up rules to automate your flow. • Stay organised your way – Use folders or labels to keep things tidy, and categorize messages without opening them. • Work smarter – Schedule or undo send, add private memos, set VIP-only notifications, and resize images in the compose window. • Custom swipes – Quickly archive, delete, or take other actions with up to four swipe gestures. Your preferences stay consistent across devices. • Easy navigation – One-tap access to mail, calendar, contacts, and settings. Customize the toolbar in Display Options, or hide it altogether. • Faster inbox actions – Select messages by tapping avatars, or using a two-finger swipe for faster multi-select. Smarter calendars • Plan together – Share calendars with family or teams. • Sync seamlessly – Works with Google, iCloud, and more. • Always in sync – Updates instantly across devices, with full time-zone support. Connected contacts • Shared or private address books – Keep context from recent conversations and meetings. Why Fastmail? • Privacy first – No ads, no tracking, no selling your data. It’s your data, not ours. • Secure and trusted – Robust encryption of your data both in transit and at rest. Passkeys and 2FA keep your email private and safe. • No lock-in – Over 20 years delivering better email. People stay because it’s better, not because it’s hard to leave. • Real support – 24/7 online help from real people, no chatbots. • Migrate in minutes – Move mail, contacts, and calendars from your old provider in minutes. Better for everyone – Fastmail supports open standards, keeping email private and usable for all.
Reddcrypt
Encrypt your email communications effortlessly with this app. It offers end-to-end and zero-knowledge encryption, making it easy for anyone to send sensitive information securely on their smartphone or tablet. Enjoy enhanced privacy with a focus on user comfort and robust security.
- End-to-end encryption
- Zero knowledge encryption
- Easiest handling
- Use existing email address
- Automatic encryption
- 100% made in Germany
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Too complicated, too elaborate, uncomfortable to handle – The reasons for not using S/MIME or PGP are diverse. With REDDCRYPT these arguments are a thing of the past as everyone is capable of encrypting their email communication from now on. With the REDDCRYPT app for smartphones and tablets, even when you´re on the go. With REDDCRYPT we pursue the goal to make the world a little more secure. That is why we offer email encryption for everyone, both companies and single users. Our main focus is the best possible user comfort without cuts to security. At a glance: • You can continue to use your existing e-mail address • End-to-end encryption • Zero knowledge encryption • Easiest handling • 100% made in Germany • German servers This is how REDDCRYPT works: REDDCRYPT automatically encrypts your emails on your device before they are being send. Thus, your emails and their contents remain private. This way you can securely send sensitive information via email. You authenticate yourself on the REDDRYPT app with your email address and a password. A key pair comprising of public key and private key is automatically generated. Your private key is then encrypted with a password hash and uploaded to our servers together with your public key. Sounds too complicated? Don’t worry as most of this happens in the background. You only need to enter your email address and choose a password to generate the key pair. Writing an email happens locally on your device. Why is this important you may ask? Because only you can read the contents of the email as the process happens locally. Before sending the email it is automatically encrypted on your device. If the recipient is also a REDDCRYPT user, the encryption takes place with the public key of the recipient. This means that you don’t have to take action, as everything happens automatically in the background. If the recipient is not a user of REDDCRYPT yet, you will have to define a passphrase for this first mail with which the recipient can decrypt the mail. To make sure that only the intended recipient can read your email. you can disclose this passphrase to the recipient e.g. via sms or phone call. To be able to read the email the recipient authenticates on the REDDCRYPT app, as well. If he already has access and the email has been encrypted with this public key, then the recipient can open, read and answer your mail right away. If he didn’t have access yet, he will have to generate his own key pair to through his email address and a chosen password. Afterwards he can see your encrypted email which can be encrypted by entering the passphrase you have disclosed to the recipient earlier (e.g. via sms or phone call). This passphrase is only necessary for the decryption of the first email. With every email that comes afterwards the encryption and decryption process takes places automatically in the background. Highest user comfort and highest security – this is REDDCRYPT.
Screenshots
Verdict
The clearest difference is review sentiment: Reddcrypt at 100% against Fastmail's 49%. Reddcrypt also leads on rating (5.0 vs 3.8) and in-app purchases (none vs 1). Fastmail's advantage is update cadence (every 3 weeks vs every 18 months) and ratings volume (585 vs 2). 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. Fastmail sells 1 in-app purchase, starting at $6.49 per month. Reddcrypt asks for nothing beyond the download.
Reddcrypt holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Fastmail has 585 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 49% of Fastmail's written reviews are positive against 100% of Reddcrypt's.
Fastmail ships an update every 3 weeks, Reddcrypt every 18 months. The most recent releases landed on October 29, 2026 and October 17, 2026 respectively.
| Parameter | Fastmail | Reddcrypt |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (585 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 48.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 585 — better | 2 |
| Update frequency | Every 3 weeks — better | Every 18 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.4 | 10.0 — better |
| Further details — not scored | ||
| Size | 21 MB | 169 MB |
| Age rating | 4+ | 4+ |
| Developer | Fastmail Pty Ltd | REDDOXX GmbH |
Customer experience
Fastmail
Reddcrypt
Bugs and requests
Fastmail
Reported bugs
5 issues- Blank screen on app launch
- Notification badges not updating correctly
- Delayed email delivery
- Unreliable swiping gestures
- Disappearing toolbar buttons
Requested features
5 requests- Offline email access
- Customizable notification sounds
- Integration with native iOS apps
- Dark mode support
- Multiple account management
Reddcrypt
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Fastmail
- Fastmail Monthly Plan$6.491 Month
Reddcrypt
No in-app purchases









