This is the beginning of a series of tips for the SimpleMoney app. SimpleMoney is an Universal Apple App for iPhone, iPad and macOS. More details in the link below:
This article is about the possibility to add categories. You can add as many categories as you like.

You will find the Categories tab under Settings. In the next window you can then favorite categories by tapping on the row as you wish. There are categories that are preset and cannot be deleted or edited. The categories you have created yourself can be deleted by swiping to the left.

To edit a category, press the box with the color and the pencil that is not crossed out. But before you can edit a category you have to add it by pressing the plus (+) sign.
Now you can add or change the name of the category. You can also choose the color for the respective category. The color is important for the evaluation in the statistics and for the expenditure area.
Important: The categories are only for the expenses and for a better overview in this area.