Comparison

Criptext Secure Email vs FlowCrypt

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Criptext Secure Email

This email service prioritizes your privacy with end-to-end encryption and no data collection. Your inbox is stored solely on your device, ensuring only you and your recipients can access your messages. The open-source nature allows for verification of its security claims.

Highlights
  • End-to-end encryption
  • No data collection
  • Local inbox storage
  • Open source code
  • Easy to use interface
Read full description

Finally, an email service that's built around your privacy. Get your @criptext.com email address and see what it's like to have peace of mind and privacy in every email you send. Features: +End-to-end Encryption: Criptext uses the open source Signal Protocol library to encrypt your emails. Your emails are locked with a unique key that‘s generated and stored on your device alone, which means only you and your intended recipient can read the emails you send. +No data collection: unlike every other email service out there, Criptext doesn't store your emails in its servers. Instead, your entire inbox is stored exclusively on your device. +Open Source: our source code is open for everyone to see that Criptext actually works the way it's advertised. You don't have to trust us, you can verify for yourself: https://github.com/Criptext +Easy to use: our app is designed to work as simple as any other email app — so much so, you'll forget how secure it is. Get Criptext and see how easy it is to email with more security and privacy!

About

FlowCrypt

Easily encrypt your emails and attachments with PGP for enhanced privacy on Gmail. This app simplifies end-to-end encryption, making it accessible even without technical knowledge of cryptography. Secure your communications and files effortlessly.

Highlights
  • End-to-end PGP email encryption
  • Secure attachment encryption
  • Key generation and secure storage
  • Encrypted drafts
  • Password-protected encrypted messages
  • Compatibility with OpenPGP standards
Features
Read full description

Simple end-to-end encryption to secure email and attachments on Gmail. - Sets up in a few taps - Lets you use PGP encryption by generating a private and public key directly on your iPhone or iPad - Your keys are stored securely in iOS Keychain - You can choose to save your key passphrase on device or enter it as needed - Drafts are encrypted before saving to Gmail - Send messages encrypted with password to users who don't have PGP There are a few ways this encryption app stands out: - Easy email encryption that just works. - Anyone can use it. We've worked to ensure every single way possible that email encryption can be confusing has been removed, so that more people can encrypt Gmail. - You can send encrypted attachments. Text files, powerpoint slides, excel documents, image files, any and all files and attachments can be sent privately. - No understanding of cryptography needed. Don’t know what a public key is? You don’t need to know to secure your email with FlowCrypt. Power users with an existing public key are also served. Whether you have struggled with other ways to encrypt email or you are trying email encryption for the first time, you will find this a very simple secure email solution thanks to PGP. PGP stands for Pretty Good Privacy it's the standard for secure email encryption. This Gmail end-to-end encryption app lets you encrypt Gmail messages anytime your email security and privacy matters, without having to think about it. Most email providers don't give you the level of privacy that we should expect. That is why we created the FlowCrypt app that lets you encrypt google email without needing to learn anything new. Email PGP encryption has been historically a very difficult area, which few people used because there was no easy PGP solution around. If you were asked for a Public Key or a PubKey so that others can encrypt messages for you, just install FlowCrypt and you will find your new Public Key in the settings. Also, file encryption is fully supported. To encrypt an attachment just open a compose screen, add the recipient's email, and attach a file. If they have encryption set up on their end, that's it - just send the encrypted email out. PGP or the OpenPGP is a standard for encrypted communication used by more than 10 million people. FlowCrypt is compatible with most OpenPGP software out there. Looking forward to your feedback! Email us at human@flowcrypt.com as we're improving the app every day. Website: https://flowcrypt.com/ Source code: https://github.com/FlowCrypt/ Documentation: https://flowcrypt.com/docs/

Screenshots

Criptext Secure Email4 screens
FlowCrypt2 screens

Verdict

The call

The clearest difference is rating: Criptext Secure Email at 4.7 against FlowCrypt's 4.0. Criptext Secure Email also leads on update cadence (every 3 weeks vs every 4 months) and ratings volume (1.2K vs 3). On price, review sentiment, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Criptext Secure Email holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Criptext Secure Email has 1.2K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 56% of Criptext Secure Email's written reviews are positive against 50% of FlowCrypt's.

UpkeepUpdate frequency

Criptext Secure Email ships an update every 3 weeks, FlowCrypt every 4 months. The most recent releases landed on October 9, 2026 and October 15, 2026 respectively.

Scorecard4 real differences · 6 level
Criptext Secure Email versus FlowCrypt: the parameters behind the verdict, then further details
ParameterCriptext Secure EmailFlowCrypt
PriceFreeFree
Rating4.7 (1.2K ratings) — better4.0 (3 ratings)
Positive reviews56.5% of reviews — better50.0% of reviews
Number of ratings1.2K — better3
Update frequencyEvery 3 weeks — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.2 — better15.0
Further details — not scored
Size64 MB28 MB
Age rating4+4+
DeveloperCriptext Inc.FlowCrypt a. s.

Customer experience

Criptext Secure Email

All ratings1,215 ratings
Positive91.8%
Neutral3.0%
Negative5.2%
Written reviews85 reviews
Positive56.5%
Neutral4.7%
Negative38.8%

FlowCrypt

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Bugs and requests

Criptext Secure Email

Reported bugs

5 issues
  • App freezes on startup
  • Sync issues between devices
  • Emails not received or delayed
  • Attachment upload/download failures
  • Password reset problems

Requested features

5 requests
  • Dark mode option
  • Advanced search and filtering
  • Calendar and task management integration
  • Improved backup and export options
  • Support for more email providers and aliases

FlowCrypt

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Criptext Secure Email

No in-app purchases

None

FlowCrypt

No in-app purchases

Questions

Is Criptext Secure Email free?
Criptext Secure Email is free to download, with no in-app purchases.
Is FlowCrypt free?
FlowCrypt is free to download, with no in-app purchases.
Which has better reviews, Criptext Secure Email or FlowCrypt?
Criptext Secure Email is rated higher. Criptext Secure Email averages 4.7 out of 5 from 1.2K ratings, while FlowCrypt averages 4.0 from 3 ratings.
Do Criptext Secure Email or FlowCrypt have ads?
Neither Criptext Secure Email nor FlowCrypt shows ads.
Which is updated more often, Criptext Secure Email or FlowCrypt?
Criptext Secure Email ships an update every 3 weeks, and FlowCrypt every 4 months. Most recently, Criptext Secure Email was updated on October 9, 2026 and FlowCrypt on October 15, 2026.

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