With Work Control 3 you will be able to keep track of the extra hours you do, since it allows you to order them through OT's, at the same time that it indicates the total hours so that you know at all times the number of hours you have in all OT's.
Work Control 3 records in CSV files applying the OT number as the file name, in order to be able to consult the file at any time using an Excel application.
Work Control 3 Also allows you to add voice or written notes.
Once the control is done, you can delete the file completely from your device simply by entering the OT number.