The instant messaging app Yo has reached the number one spot of the ranking of free application downloads in several different countries. If you want to find out why it has achieved so much success, you only have to download it.
A messaging application that has gone viral.
Over 4 million "Yo" messages in less than 3 months
The strength of Yo is that it doesn't ask for personal information, it doesn't store your messages and it only requires minimal effort, not to say none at all. This app only sends one message: Yo, that will be enough to communicate with those contacts with whom you may have agreed some sort of code or to draw someone's attention.
However, this simple communication utility also has its knockers, possibly because it requires you to input your contacts manually, it doesn't allow you to send photos or to show stickers...
In any case, it's recommendable that you download Yo free for iPhone, and that you check out for yourself why this application has had so much success. Discover the Easter eggs!