It’s simple; it looks just like a calendar or datebook. Put in your numbers and it does the math for you. Using Horizon just click on a date, and enter an amount. A few simple clicks and keystrokes later and you’ll have a clear simple view of where your money comes from and where it is going. Change any value and all related values update automatically. You can hide and show different categories to focus on different aspects of your finances. You can move back and forward through time to see what things will be like next month, six months from now, or next year.