People are sent an invite and they have to accept the invite to join the Group, unlike WhatsApp where someone who has your contact can often add you straight to a group. If you do create a group, everyone is not automatically added to the group. One can also create groups on Signal, which are limited to 150 members. In fact, it recently introduced the group video calling option in December 2020. Signal lets users send messages, make audio and video calls with their friends, share photos, videos and links, similar to how other messaging apps work. (Image source: Signal) Do you have to pay to use Signal? What are the features? But it collects the bare minimum user data. Signal has almost all the features as seen on a regular messaging app. Acton, who left WhatsApp back in 2017, has put in around $50 million to help with funding Signal. The Signal Foundation was created by WhatsApp co-founder Brian Acton and Marlinspike. The app was created by Moxie Marlinspike, American cryptographer and currently CEO of Signal Messenger. The app is developed by the Signal Foundation and Signal Messenger LLC and it is a non-profit company.

Signal is a messaging app, available for iPhone, iPad, Android, Windows, Mac and Linux.

Signal messenger llc