Android (10000 programs)

Pros: Very colorful and bright. Addictive mode of play. Increasing difficulty.

Cons: Only for fans. Somewhat repetitive.

Pros: Offers heavily downloaded apps for free. Sleek, easy-to-use interface. Good filters. Provides recommended apps, videos, etc..

Cons: Requires an Amazon account. Installation takes a lot of steps. Fewer app offering. Some apps may take ages to update.