The most popular messaging app in today's world is WhatsApp. The same application is used by almost all types of users, i.e., to convey official information and send personal messages. Many of you might be wondering what the difference is between WhatsApp and WhatsApp plus. The WhatsApp app was launched in 2009 and has over two billion users worldwide. The company was founded by Brian Acton and Jan Koum and was acquired by Facebook in 2014. Mark Zuckerberg and Brian Acton had a difference of opinion which led to Acton's departure from WhatsApp. The Signal app was co-founded by him and Moxie Marlinspike in 2018. KaiOS 2.5.1 and Android 4.1 and above are the platforms on which WhatsApp is currently available.