You can add a timer in Moon Invoice easily by following the steps below.

1. Open the Moon Invoice application on your device or tap on this link.
2. From the main menu on your left, go to Time Logs.
3. Click the ‘+’ icon to create a new time log and enter the required details. Then, click Save to add the timer.
4. Now, click the timer to start tracking time, use the pause button to pause it, and the stop button to end it.