500€ iOS app

I started working on a new project for myself. This is the main view of the app. The idea behind is, that I want to regulate a little my spendings and I want to spend only 500€ per month and with this app I'll be able to see how much I have left for that month. :) I don't like the normal expense counter apps, cause they usually lack of something that I need, or I don't like the design of them, so I just create my own. :)