The time planner app lets students estimate the time they will spend in the various phases of an ILS. This app is to be combined with the time checker that shows students their actual time spent in comparison to their planning.  Normally, the time planner is included in an early phase of an ILS, the time checker towards the end of an ILS. The main difference with the Time spent app is the person who does the estimation (teacher for time spent and student for the time planner).