There is not. The only people who use apps are the ones that don't respect the process. This is because the BEST training book you will ever read is your training log. Obviously it has your numbers in it, but your notes and observations about each training day. If you want to be amazing and aren't the most talented, smartest person ever in training, you need to do this.
Like I said, if you want to get better and wish to be more than a trender, you will keep a training log. If not, I don't really care what you do.