Strangely, for an app that's all about appearances, Tinder has never allowed its users to directly send images to one another. That could be set to change, however, as the dating startup has announced its first-ever acquisition: Tappy, a Snapchat-like app. Tappy launched last summer as a high-concept ephemeral messaging app. To start a conversation in the app, users had to send an image, which would disappear after 24 hours. The idea was that photos would spark conversations, but despite positive reviews, the app never really took off.