It would be very useful to track the quality of our revision over time. When we set a goal to revise what we know every 3 weeks for example, it would be useful to see what percentage of our goal we completed each time the goal repeats (i.e. for each completion). Personally I’m not able to finish my goal every 3 weeks, so it would be useful to see if I am completing a larger percentage over time, and also which surahs/Juz I revised with each completion.