I prefer to record both the QSO Start Time and the QSO End Time for all my QSOs, so in RUMLogNG on macOS I set the time field in the top left of the log panel (to the left of the Callsign field) to log the QSO end time, and I mapped the User_1 field to TIME_ON, which is automatically filled whenever I enter a callsign for a new QSO.
I would like to do the same in RUMLogNG2Go on my iPad, but TIME_ON is not one of the listed possible values for the User-defined Fields. Could that be added in a future release?
Steve, N5EP