Tasca reminds you every now and then that you intended to study (or whatever it was). If you tell it you have been doing just that, it will give you an acoustic pat on the back, and let you continue your work for a longer time. If you get distracted, it will prompt you earlier the next time, urging you to stay more on task.
The report feature lets you see how much time you spent on one task or another, and how often and how long you were able to stay on task.
Use Tasca now as part of your New Year's Resolution to get more done!