Shmuel Shahar
This app is the most secured chat application exists. It keeps your data private and allows you to perform all the chat operations in the most secured manner. You can send messages to your friends, teammates, colleagues, clients, groups, and trust that the content is secured. You can also share files, images and videos, they are all secured as well. Images and videos are shared in the original resolution. I use this app to share credentials, user, passwords and business information with my team.