Тяжеловато

Limits on spending the day and helps to stop merging salary for trifles

Money is not infinite.
The app shows how much it costs today. He believes the new budget on the go, as long as you enter the waste. The app shows the truth: if you spend too much today, will reduce the amount the next day.

Opened - introduced.
To enter the waste, open the app enough. Lazy because of the complex interface is unlikely to succeed.