iPhone Screenshots


Sending messages with SIMSme is completely safe and private – no eavesdropping possible! Chat and SIMSme with true end-to-end encryption – guaranteed by Deutsche Post. Download now!

SIMSme was awarded the “Trusted App” seal of approval for highly secure apps by mediaTest digital in cooperation with TÜViT. In addition, it is recommended by the police of Lower Saxony. Eavesdropping of your messages is eliminated through end-to-end encryption.

You don’t want your files and photos out there on the internet forever?

Are you looking for a solution for secure file transfer?

Are you looking for an app to make sure you always receive the best news?

Would you like to finally be able to chat, text and message with end-to-end encryption?

SIMSme offers all the features that you have come to expect from a modern and advanced messaging app – and much more:

Your data remains YOUR data. Messages are encrypted on the sender’s device and can only be decrypted on the recipient’s device. Even we can’t view your message when you chat and message with your contacts.

Starting immediately, you can also send files with a size of up to 10 MB in SIMSme. Simply select the file via the “Open” menu in other apps and send it with SIMSme, or select a file from diverse storage locations, e.g. iCloud Drive, Google Drive, Microsoft OneDrive or Dropbox, via the “+” symbol in Chat
Using SIMSme, you can automatically destroy your sent messages so that the recipient can only view it for a limited time.

Send voicemail in your chat without the fear of eavesdropping. That way, your hands are always free when messaging.

SIMSme’s servers are located in Germany and will stay there. Of course, this also means that your data will be handled in accordance with German Data Protection Guidelines!

Download SIMSme now and you can finally message with end-to-end encryption.

Do you have any questions, suggestions or comments regarding SIMSme? We look forward to hearing your feedback! Please contact us: support@sims.me

What's New

Version 2.0.1

SIMSme Version 2.0.1 has arrived! We are pleased to announce that the App now works perfectly on the new iOS 11 as well. Improvements and bug fixes:
- New: The read receipt can now be disabled for more privacy. This way no-one can see when a message has been read.
- Fixed: If there were a high number of new messages in groups, the app took a long time in the past to show them.
- Fixed: In certain situations the app did not open correctly via the push notification.
- Fixed: The error causing the notification “Invalid message signature” has been fixed.
- Fixed: We have optimised the source code and eliminated imperfections, which is noticeable in the improved stability.
Did you find any errors that need correcting? Please send us your feedback to: support@sims.me. We are delighted that you have decided to use SIMSme!

Ratings and Reviews

understand? big bug...


I sent a message, but the speech bubble is hidden on the inside of the iPhone keyboard, not on the screen. This is an intermittent bug. Let me see it on the screen every time I send a message.

****Past reviews****
There is a bug where the speech bubble intermittently hides inside the iPhone keyboard when you type and send a message.

Pure crap...uninstalled


Difficult to send voice messages. Who the hell thought to put the icon of send close to delete?

Works great


Took a while to understand the little nuances but afterwards, works perfectly as advertised. You have to invite contacts to join the secure network, but the benefits of undecipherable, encrypted communication far outweigh the effort. Like most German products: TOP GRADE !


DP IT Brief GmbH
99.6 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, French, German, Italian, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese, Turkish
Age Rating
Rated 4+
© Deutsche Post AG


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    With Family Sharing set up, up to six family members can use this app.

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