I was using another time-keeping app until they "upgraded" their app and destroyed a key function. I decided to try this app and have been very happy.
This app is perfect for my simple need of keeping track of my daily hours at work. I also like that I can tag a whole period of time.
The only downfall is that the free version only allows a limited number of saved days of tracking so I regularly have to delete days which is no problem.
debbie T about Hours Tracker: Time Tracking, v4.0.3