I use a spreadsheet and Poker Tracker. My spreadsheet is actually older than my PT so it has additional info that PT doesn't (due to a hard drive reformat). I'd recommend anyone serious about keeping track of their play to have an additional spreadsheet. It allows you to see exactly what you are doing, how you are doing and the money involved in every session. The extent to which you can use the spreadsheet is done to you, but at the minimum I'd say use it as an accounts file. Someday you may need to show someone your earnings/expenses/losses.