One pays app for iPhone and iPad

With this app you can manage the expenses of shared apartments, travel groups or other projects. At the same time, you can make paying easier. One person pays the entire bill. The next day someone else pays depending on who wants to pay. You enter the receipt at your leisure and the app does the rest.
The app has no limit on projects, persons or expenses. You can also work with different projects parallel. The app supports all currencies in the world. You can manage different currencies in a project. You can enter the exchange rate between pay currency and billing currency. A project has a billing currency and you can change it at any time. The app recalculates everything and creates a new billing with the new billing currency.
The design is very clear. The handling is very direkt. For example: with tap on data you can mutate this data or with swiping to the left you can delete data.
All persons involved in a project are simultaneously informed by email about the compensation payment as well as details of expenses and consumption.
No matter how complicated the payments were, the app calculates to which person a single compensation payment needs to be made.