Good app, makes workouts "fun"

I really like this app, I started the plank challenge about a week and a half ago and am really seeing progress, app seems to work well, I love the built in timer with its "ready, set go!" voice prompts and that they give you steps and links to videos for every exercise but there are some things that could be tuned to make it even better. Id love to be able to do exercises I already completed with the timer again, I also wish I could see a list or calendar of all the workouts for the challenge in one place

CatK13 about 30 Day Fitness Challenges