AceInvoice

AceInvoice is a time tracking and invoicing application.
This app helps you track time spent on various tasks across various projects.

Tracking time is easy. Start the timer and then get back to work.
When work is done then record the time spent with one click.

The app tracks time when the computer is idle so that idle time can be removed. The app also periodically reminds you to record time.

Both weekly and monthly view of the calendar is available to see how much time was recorded on what activities. Using the app you can also edit and delete time entries.