No, you enter as you go or fairly frequently at least. Also, reconcile accounts sometimes to make sure nothing was missed.
It isn't so much to track your expenses and see where you spent, although that is possible, but more so to give your dollars a job, live off last months income, and you spend based on your budget categories, not your bank account balance. I really like it, but I love playing with numbers. We were never wasteful with our money, but it has still changed some of our habits for the better. There is quite a learning curve and it is time consuming the first month trying to set up and learn the software, but after that it is great. I don't think we will ever stop using it. Also, you can set up multiple budget inside it so we have a seperate one for our rental properties. It has also been great for keeping up with my DH's work expenses that get reimbursed by his employer.
Might as well do the free trial...what is there to lose?