WhatsApp was Facebook’s most-downloaded app in 2020 at 600 million installs, followed by the original Facebook app itself with 540 million installs, Instagram with 503 million, and Messenger with 404 million.
WhatsApp was Facebook’s most-downloaded app in 2020 at 600 million installs, followed by the original Facebook app itself with 540 million installs, Instagram with 503 million, and Messenger with 404 million.