Title says it all, really. You can enter in your purchases, bills, incoming money, whatever. I use it to track my spending budget on fun stuff and it really helped me realize how expensive a lot of little things are. Even something as simple as McDonalds or buying some candy! It doesn't have any budget making tools or tracking average spending or anything like that, but it doesn't need it. There are plenty of other apps that do that. It's a Simple Money Tracker, and that's all it needs to be.
Simple Money Tracker Pro at Google Play market analyse