I reviewed this app It has approximately 1, 50, 000 applications till now( for the 1st quarter of 2015) and is still growing. Only Apple Store has more apps than it. This quick development has been possible, only for Android being an open-source platform. Many of the apps in play store are free and some are paid. Even many Indian developers have uploaded many apps and games in this store. For the last few years, the number of apps developed for Android platform saw a phenomenal increase. As smartphones are within the reach of numerous number of people throughout the world( thanks to the global reach of some not so eminent companies like Micromax, Gionee, Huawei, Xolo, Lava, Xiaomi etc to name a few) , mobile apps industry flourished by leaps and bounds. And we have also become not just users but consumers of this particular industry as many of the apps require to be purchased online.