Waking up early will help you conquer the world.. you have enough time on your hand to do what you want to do. No children (unless they are less 12m old) and spouse to bother.
Alarm or any other fancy tool will work only so long. What will keep you moving (and waking up early) is the passion to do something. Your mind will wake you up and you will feel fresh. I woke up at 4.30am for 2 years without any tool, just had an idea and passion to build something.