About to delete for a different app – 30 Day - Plank Challenge Review

Thought I found the best app ever until it jumped from 35 seconds to 60.... sorry but a beginner can’t just double their time in one day. I tried getting to 60 seconds three different times and the best I could do was 45 and it was extremely difficult.
Review by Mandaneilson on 30 Day - Plank Challenge.