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I need a very simple Adroid app that stores data. The app is a little like a budgetplanner which requires income and costs. These are sessions on a certain date with a profit / loss value in € or $. This input is then stored and can periodically (weekly, monthly, yearly) viewed with an accompanying graph (x = date, y = money). The entire design will be delivered by me in the desired format (png, jpg, ...). The app must only be programmed, graphic design is done.