The applications do not collect or transmit any personal or sensitive information (call logs, SMS messages, private contacts etc.) unrelated to their main functionality. The applications do not transmit any personal or sensitive information (call logs, SMS messages, private contacts etc.) to their author or any third parties. Some technical information directly related to the main functionality of the application might be written to the logcat (Android logging system) by the application itself or by Android. In case of application crash or unresponsiveness Android might send information related to crash/unresponsiveness to Google and part of that information might get shared with the author of the application.
All the requested permissions are required for main functionality of the applications.