I've always been a fan of tracking how I spend my time, especially in regards to work. I even tried to build an infographic week to week using chronographs. Unfortunately, I found the habit non-conforming due in no small part to the extra time it took to commit. Creating spreadsheets and manually inputing the time was also something I didn't find a benefit.
Fortunately, I found an app that I could use to create special tasks that I identified being core functions of my work. Hours, a free app, has proven to be highly beneficial for my time management. I truly enjoy sevaral features, that allow the individual task creation, ability to backtrack and adjust time if needed, data export features (as CSV or PDF), and reminder features.
While I have found Hours vastly enjoyable for my eccentric hourly tracking habit, I have been put off with constantly using my phone. At times, I have to go back and manually enter the time or adjust areas. Sometimes I forget to turn off the timer. That being the case, the smartwatch feature that Hours has integrated into their app has really been great. I like the fact that it supports glances, and also allows you to turn on different timers right from the smartwatch.
Overall, I have greatly found the smartwatch app easy to use, and has been a nice habit of mine that I have kept up with. I would highly recommend this app if you are into this type of stuff, or perhaps bill for time or services and want a way to share it with someone. For reference, refer to the next image on how the data is exported as a PDF:
Hours Time Tracking - iTunes Store