You could win a $25k shopping spree on Amazon and all you have to do is download and install any app from the Amazon app store to your Android phone.

After installing a free or paid app from the Amazon app store, you'll have to fill out a short form, submit it and you're officially entered. The contest ends on 4/15/2015 and only one submission per person is allowed. Amazon will hold a drawing on or around April 27th. There will be one winner who gets gift cards from Amazon totaling $25,00!

Source: Amazon