Do not buy this app.
When it works, it works fine and is pretty neat at dealing with a monthly spending. However the App developers are fairly incompetent. Two times in 2012 the program would crash after an update. The first time was in February of 2012 and the second time was just recently. This is totally unacceptable in a paid app.
Even if this bug is fixed, I would not recommend buying the app as this is the second time that this has happened in one year.
darrow42 about Budget with Back in Black, v1.4.0