If you add a time entry using the "Clock on/Clock off"
screen, you now have to pass through 2 screens. In the
first screen you have to enter the project, task, time
clocked on and time clocked off. If you clock ok, you
go to the next screen where you can enter an optional
description. It would be nicer if those screens were to
be combined into one, that would save time entering data.
I would like to add another suggestion: Supporting shortcuts bia javascript will help to increment the usability to use the system.