Here's the very concept of the app: be as simple and easy to use as possible. It's not the most complete budget app, the most powerful or the most fancy, but you can enter your expenses and see how much you have on your account in seconds and go back to your life.

I made this app on my free time, and launched it at the end of last year hoping some users would like it. It's free (without ads, only contains an in-app for premium features), available in 6 languages, and it adopts Material design as much as possible.