Time is precious, so log what you did every hour, use tags. Later you can view a plot of your progress and see some very nice insights about your productivity patterns.

It has been proven that reviewing your days helps you increase productivity and improves your mood because you feel more in control and see tangible improvements of your life and personality. Logging your hours helps you value every hour while catching yourself on how you get lazy or procrastinate. This app is a simple tool that can do wonders.