Microsoft Excel
Microsoft Excel is a spreadsheet program. As such, you can use Excel to record various information about yourself. One way is to record your data by date. First, you make a column representing dates and another column for the data that you want to track (e.g., steps). Every day, you fill in a row with the date and how many steps you took for that date. When you have several weeks of data, you can use Excel to generate graphs of your step counts over time.