I use this every day to track my hours. I work for a project-based org, so being able to track time under multiple projects is necessary, and I like that it doesnt force you to use a calendar (with specific times), just the number of hours worked. Theres logged time (I worked X number of hours today), a stopwatch option to track in real time, and a planned time option, all of which are helpful. Its also visually appealing and intuitive. My only suggestion is to add a week view on the mobile app. I count hours by week and I dont think the mobile app allows you to see the number of hours you have worked so far that week, either on the calendar view or in reports - only by month. Otherwise its the best app Ive found for this purpose.
NataliePH about Timely Automatic Time Tracking, v4.3