Messengers today are one of the most convenient communication tools, for this the number of messaging apps’ users are growing every day. However, not everyone has confidence in current messaging apps, and it is reasonable because of the secure of a data transmission process – a priority feature for most smartphone users. Generally, most messengers don’t have open Source Software, as a result it is not possible to be ascertain that the software is not containing “backdoors” or other “bookmarks” to transfer user’s information to third parties. In addition, almost all instant messengers request an access to the address bookPowered by WPeMatico