I have the wifi only ipad. Mine gains a few seconds on the clock a day so I have to manually adjust the clock every week.
I had assumed that the new OS update would have some sort of a time sync with an internet time server to keep the ipad time more accurate.
I dont see any change so I guess Apple decided to ignore that problem although a lot of people are complaining about it.
Too bad they wont let an app do that. I would gladly pay for that app.