There really is an app for everything -- even one that just sends out the simple two letter greeting, "Yo."
The free app, which is simply called "Yo," is available for iPhone and Android users.
"'Yo' is a single-tap zero character communication tool. Yo is everything and anything, it all depends on you, the recipient and the time of the Yo," according to the app store description.
Developed by San Francisco-based Life Before Us, LLC, the app's creators describe it as "the simplest & most efficient communication tool in the world."
And it is really as simple as it sounds.
Download it, choose the friends you want to send your "Yo" greeting to, and they get a push notification on their phone and that's it. Seriously.
"The 'Yo' itself is the message," "Yo"app creator Or Abel, told CBS News. "'Yo' is a very generic word that can mean anything."
The app concept emerged when Abel was asked by his boss at the time, Moshe Hogeg, head of the image-sharing app Mobli, to come up with a way to communicate with his assistant without calling or texting.
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What do you think of this app? Would you use it?