Tap on "Add timer" at the bottom of the main screen to add a new timer.

In the Personal version of Hours, you can then assign a name to your timer. Save your changes and start tracking your time!

In the Professional version, you can then assign a project to the timer, and optionally identify the client for the project and assign a task. When you tap in the task field, you will see a list of all tasks you have created for all projects as a pool to choose from. You can also tap on a color to change from the default color for the timer. Swipe the colors to see more options.

To edit an existing timer, from the main screen, tap in the white area of a timer where the project name is shown, then make the desired changes and tap Save.