The signal is a well-known messaging app, widely used by journalists, academics, privacy researchers, security experts around the world. However, Signal is open source while WhatsApp is not. Both the apps acquire users’ purchase history, location details, contacts, phone number, email address and usage data, among others.
On the other hand, Signal does not store much personal information except your phone number. WhatsApp has given prior notice to its 400 million users in India a deadline of February 8, 2021, to accept the terms or delete the account.