Sending messages with SIMSme is completely secure and private – no eavesdropping possible! Chat and SIMSme with true end-to-end encryption – guaranteed by Deutsche Post. Download now! Follow our partners’ content channels to keep up to date with the latest info and news. These include: – Kicker – Wetter24 – AndroidPit – Giga – Wired ...and many more! 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: TRUE END-TO-END ENCRYPTION 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. FILESHARING Starting immediately, you can also send files of any type up to a size of 10 MB in SIMSme. Simply touch the “+” symbol in Chat in order to select a file for transfer from local storage or from other apps such as Microsoft OneDrive or Dropbox. SELF-DESTRUCTING MESSAGES Using SIMSme, you can automatically destroy your sent messages so that the recipient can only view it for a limited time. VOICEMAIL Send voicemail in your chat without the fear of eavesdropping. That way, your hands are always free when messaging. SERVERS LOCATED IN GERMANY 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:

Available on

Mobile device

Mobile device

Version notes

Version number: 2016.324.1313.283

Dear User, Thank you very much for your regular feedback! We have added a new feature again for version 1.6: - filesharing: Starting immediately, you can also send files of any type up to a size of 10 MB in SIMSme. Simply touch the “+” symbol in Chat in order to select a file for transfer from local storage or from other apps such as Microsoft OneDrive or Dropbox. - Performance improvements - Bug fixes

System Requirements

OS Windows 10 Mobile, Windows Phone 8.1
Architecture ARM
OS Windows 10 Mobile, Windows Phone 8.1
Architecture ARM

Additional info

Published by
Deutsche Post AG

Approximate download size
12.08 MB


  • Age rating
  • Entertainment Software Rating Board


    Users Interact

    Shares Location

This app can
Use your location
Use your webcam
Use your microphone
Use your contacts
Access your Internet connection and act as a server.

Get this app while signed in to your Microsoft account and install on up to ten Windows 10 devices.

Language supported
English (United States)
Français (France)
Deutsch (Deutschland)
Português (Brasil)
Italiano (Italia)
Русский (Россия)
Español (España, Alfabetización Internacional)
Türkçe (Türkiye)

Publisher Info
Publisher Website
Publisher Support

Additional terms
SIMSme by DPDHL privacy policy

Ratings and reviews

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Platform: Mobile

It is all right...

It is compared to the android version pretty out dated, but nevertheless thank you for Windows Phone support. The biggest problem that I noticed is that I can not send pictures, because it does not get decrypted on the receiver's device... I don't know whether I am the only person with this problem but it would be awesome if you could fix that👌 thank you! I love the concept of the app!

15 out of 36 people found this helpful.




Platform: Mobile

Telling all my friends about this

Works like it should (should also be noted that a number from a cellular provider is needed for the verification code to be received) would be nice if we had the feature to scan QC codes (not a bug, just simply not included in the Window phone version) other than that works perfect.




Platform: Mobile

I can't even register my number. The SMS with the verification code never arrived and I asked for it multiple times.

24 out of 57 people found this helpful.




Platform: Mobile

Might consider keeping photos out of OneDrive after taking them (Windows Phone automatically uploads pictures)

44 out of 94 people found this helpful.




Platform: Mobile

Great start. Very fast app, with good feature set. Do have issue from time to time with blank black screen when open app, but if I close and reopen it comes up.

14 out of 33 people found this helpful.




Platform: Mobile

Works, but not much longer.

Works fine, unfortunately Windows Phone support is ending.




New look

Good with security and chat privacy. But doesn't show friends in the contacts. Seems to be quite slow. Smiley option could be improved.



Ahmad Reza

Platform: Mobile

Never received reg code on my old android phone and my new windows phone. Both used in Iran.

10 out of 18 people found this helpful.




Platform: Mobile

Contacts don't show up and I know I have contacts who have the app installed

2 out of 4 people found this helpful.




Platform: Mobile

Why i don't get the registration code??

66 out of 135 people found this helpful.



Developer comment · responded on