The 10, 000 hours idea is that if you spend 10, 000 hours on some activity, you will eventually master it. This app is a simple timer for you to keep track of how much time you are putting into some of your hobbies; you can monitor up to three activities. As more motivation, however, it has hour increments along the left and right side of the screen and the bar behind it fills up in sync with the amount of total time you've spent so far. You can click on one of the hour increments and input a goal you have for yourself/your project that you want to have complete by that hour. You can edit your goals anytime.