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Definition: Google Allo

An earlier instant messaging app for Android and iOS mobile devices from Google. Introduced in 2016 and integrated with the user's phonebook, Allo supported disappearing chats and encryption. By swiping, the Whisper Shout feature changed text size: Whisper made it smaller for prying eyes, and Shout made it all caps. If recipients did not have the Allo app, an SMS text message was sent.

Google Assistant Was Ever Present
Allo was one of the first Google products to use its new Google Assistant, which interjected "smart replies" as a response to a message and gained experience with the user's habits. It could also be used directly within Allo just as a personal assistant. In 2019, Allo was discontinued and replaced by Messages (see Google chat). See Google Assistant.