Anyone have an adjustable study planner or know of an Android app like Timeprep?

Hi all!
I’m studying for the June 2017 Level 1 exam.  I am very sporadic with my studying and tend to slack a bit, then cram a bit.  All of the study planners I have only adjust by the date you start studying and when your exam is, but none of them can adjust based on topics you have left.  For instance I already have ethics covered but for my particular planner it has that at the end so my current study plan doesn’t account for no longer needing those study days for that subject.  Timeprep would be the perfect app for me but unfortunately I have an android so I can’t use it.  Anyone know of any awesome spreadsheet planners?