Most habit trackers only do yes/no. But half of what I track is numbers and times - steps, weight, when I actually fell asleep. Habit Pocket puts checkmarks, numbers and times of the day in one grid that looks like a spreadsheet, then lets you chart any habit against any other to spot correlations. It started as the Excel sheet I kept for two years. Now a real app on web and iOS. Free for 5 habits.
