See how in-app purchases can be implemented

Since in-app purchases (iOS) often show higher conversions than those for in-app billing (Android), we will have a look at in-app purchases, in particular, using the case of the Empurror app.

The case of the Empurror

The Empurror is a little SpriteKit game for iOS that I have worked on previously. It is a very simple game about a cat (the Empurror) and many kittens, jumping off a roof. In this game, our hero (the player) needs to catch them all in order to succeed:

The game comes with three in-app purchases, all donations, not adding any special features to the game, other than a view of the Empurror saying thank you. Oh yeah, and you can rub his belly to make him purr.

Anyway, the in-app purchase view looks as follows. The game offers three products: a generous donation (cat food), a massive donation (a nice-looking fish), and an amazing donation (a huge turkey). We have added these three types of donations to do some experimenting on pricing.

The...