Getting to 500 million downloads on any platform is no easy feat. Many companies have taken their sweet time to reach that number: Twitter and Viber only made it to 500 million Play Store installs a year ago, and Snapchat, the company everyone is talking about these last months, cracked through the 500 million Android installs this past March. You must have a smash hit app or service and keep that going for a while to reach this number, and this is why only a few manage to do it.

The latest app/game to reach that number is Pou. Wait, back up a second.

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