This app is great for timing things that take less than 99 hours and 59 minutes. Also, its helped me time manage my life to an exceptional degree which was totally unexpected. I break every week down into different categories, for example, I want to sleep X hours this week and exercise y hours and be free for z hours and work on my project for w hours etc. Then I time the week and I can easily balance my time and adjust the timers if give myself too much exercise or too little sleep etc. its great.