Comparison

EteSync vs FlowCrypt

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

Head to head
About

EteSync

Securely sync your contacts, calendars, and tasks across devices. This app provides a privacy-respecting synchronization solution with a full history of your data, allowing for restoration and access to past versions.

Highlights
  • Secure data synchronization
  • Contacts, calendars, and tasks sync
  • Privacy-respecting
  • Open-source client and server
  • Full data history and restore
  • Easy to use setup
Features
Read full description

EteSync is a secure and privacy respecting sync for contacts, calendars and tasks. With this application you can sync your EteSync data with your iOS device! In order to use this application you need to have an EteSync account, either on an existing server or your own (it's free and open source). Easy to Use =========== EteSync is very easy to use, you just put in your credentials and the app is ready to use. Secure & Open ============ EteSync is secure and respects your privacy. Don't believe us? You shouldn't, just verify yourself, both the client and server are open source. Full History ========= A full history of your data is saved in a change journal which means your data is never lost, even if deleted, and you can always restore, revert and access past versions of your data.

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

EteSync3 screens
FlowCrypt2 screens

Verdict

The call

The clearest difference is rating: FlowCrypt at 4.0 against EteSync's 3.0. FlowCrypt also leads on review sentiment (50% vs 21%). EteSync's advantage is update cadence (every 3 weeks vs every 4 months) and ratings volume (20 vs 3). On price, ads, in-app purchases and monetization model 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

FlowCrypt holds the better App Store score, 4.0 against 3.0. That said, the two scores are not equally well evidenced: EteSync has 20 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 21% of EteSync's written reviews are positive against 50% of FlowCrypt's.

UpkeepUpdate frequency

EteSync ships an update every 3 weeks, FlowCrypt every 4 months. The most recent releases landed on September 29, 2026 and September 30, 2026 respectively.

Scorecard5 real differences · 5 level
EteSync versus FlowCrypt: the parameters behind the verdict, then further details
ParameterEteSyncFlowCrypt
PriceFreeFree
Rating3.0 (20 ratings)4.0 (3 ratings) — better
Positive reviews21.4% of reviews50.0% of reviews — better
Number of ratings20 — better3
Update frequencyEvery 3 weeks — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.0 — better15.0
Further details — not scored
Size45 MB28 MB
Age rating4+4+
DeveloperEteSync LtdFlowCrypt a. s.

Customer experience

EteSync

All ratings20 ratings
Positive45.0%
Neutral10.0%
Negative45.0%
Written reviews14 reviews
Positive21.4%
Neutral14.3%
Negative64.3%

FlowCrypt

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

In-app purchases

None

EteSync

No in-app purchases

None

FlowCrypt

No in-app purchases

Questions

Is EteSync free?
EteSync 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, EteSync or FlowCrypt?
FlowCrypt is rated higher. EteSync averages 3.0 out of 5 from 20 ratings, while FlowCrypt averages 4.0 from 3 ratings.
Do EteSync or FlowCrypt have ads?
Neither EteSync nor FlowCrypt shows ads.
Which is updated more often, EteSync or FlowCrypt?
EteSync ships an update every 3 weeks, and FlowCrypt every 4 months. Most recently, EteSync was updated on September 29, 2026 and FlowCrypt on September 30, 2026.

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