Streaks is a very simple app designed to let you set up calendars for any number of activities. Then you just check off the days when you actually accomplish an activity and it tracks it all for you. If your brain works anything like mine (and for that, I’m truly sorry) then seeing those Xs stack up actually provides a nice motivation to keep a streak alive.
I just discovered the perfect use for Streaks. It’s is a great mileage tracker. Just click the calendar anytime you go somewhere so that day is checked off. Then touch and hold down on a day and it gives you a place to leave a note. Just put in the mileage and who you saw and you’re set.