* Real, verifiable end-to-end encryption, also in groups
* Threema requires very few privileges, a fraction of the WhatsApp permissions. Critical Authorizations (camera and microphone) are outsourced to plug-ins (Android)
* The ID is not necessarily linked to the phone number
* The synchronization of the phone book is optional
* Doodle Similar polls in groups
* Images can be sent in high resolution
* The app can be locked with a PIN
* The layout is also tablet optimized (for Android) and the app can be used on tablets
* Many privacy options, read receipt, "writes" status etc can be disabled
* The public key of the chat partner can be checked personally by QR Code
* Images are not automatically stored in the Gallery (can be activated but)
* There is the possibility of messages directly from the notification or of the SmartWatch be confirmed
* The messages are deleted from the server after delivery
* The private key can be additionally encrypted with a passphrase
* You pay only once for threema, there are no ongoing costs or in-app purchases
* The Privacy Statement will be understood by mere mortals and has no harmful clauses
* You can buy threema Android outside of the Play Gate and pay at threema-own store even with Bitcoins
* There is a support that responds quickly and friendly to questions and problems
* The threema app is constantly being improved and further developed
* Encryption Library NaCl is recognized by cryptography experts
* Backups are encrypted with strong AES-256 CBC encryption, the necessary for key is derived from a passphrase.
* Threema operated by small, independent, Swiss Startup "threema GmbH" and managed, which is both politically and financially independent. Since the costs are covered at 100% of app sales, the company is reliant financially independent and not to investors. Also meets threema neither the PATRIOT Act, nor any EU agreement, since the headquarters in Switzerland.
Any questions? ;)