iPhone Screenshots


The TopSec Phone app is a VoIP client for encrypted voice communications. For maximum security, voice recording, playback and encryption take place in a small wireless handset called “TopSec Mobile”.

The TopSec Mobile securely encrypts voice communications end-to-end on IP-based communications networks. Access to these communications networks is accomplished via Personal Hotspot of your iPhone.

The TopSec Phone app is used for call control and contact management.

To place and receive VoIP calls, both users must be registered on the same R&S®VoIP SERVER.

What’s New

Version 2.1.1

This app has been updated by Apple to use the latest Apple signing certificate.

Container synchronization was not activated properly after restart of the app. Synchronisation only worked after manually activating a server profile. Now synchronization works as expected after restart of the app.

App Privacy

The developer, Rohde & Schwarz GmbH & Co. KG, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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