Google announced its chat apps Allo and Duo at the I/O in May 2016. However, even as Google copies WhatsApp in Allo, the company is giving it a slicker and cooler looking interface. Both the apps require a button to press when recording any voice message and use of slide option to cancel any voice message. Similar to WhatsApp, Allo too requires user's phone number to activate the app. Also Read: Allo Google, you missed the message when you killed GTalk

Source: India Today August 22, 2016 11:03 UTC