Mobile applications to earn money

Now, almost everyone has a smartphone and/or a tablet.
And since many of them work with the Android operating system, it allows companies to create mobile apps to earn money or gifts.

Earn money by testing mobile applications

Usually, you will be rewarded for :

install mobile apps on your smartphone or tablet
test mobile applications
perform some tasks with a mobile application (mobile Internet may be required for this type of mobile application).

Nevertheless, because Apple is very restrictive about paid applications (for making money or participating in contests), you will find more paid apps for Android than for iOS.

Earnings are very variable from one application to another.