GTM Messenger

GTM Messenger is a cloud-based communication app usable across all devices; it allows users to send pics, videos, stickers, texts, and other files completely free. Your phone number is required for setup but there is also the option of creating a user name which is totally public and can be searched by anyone. The app is touted as being extremely secure because of its end-to-end encryption option that can be turned on, allowing users to feel much safer about sending private messages. Under the app’s general question section, users can “created groups for up to 50,000 people or channels for broadcasting to unlimited audiences.”