With AnyLog, you can keep track of anything you like. You define the fields you want to record, and simply add data whenever you like. Its more simple than a spreadsheet, but more powerful than other tracking apps. Its designed for the times when you cant find something which lets you track exactly what you want.
You can view a table of all your entries, as well as stats and charts.
You can add equation fields to combine two fields together.
AnyLog is a flexible logging app, so you can keep track of exactly what suits you.