I don't disagree you should improve your skills. but I don't think your app is optimized for that.

But, ok you're the gamemaker, then well done building something, and I hope people enjoy it.

For me, an analogue watch is good for giving you an extremely glance-able approximate time. And potentially as exquisite mechanical jewellery. If you need to know the really exact time to the second and want to be able to tell it quickly, you might be better with a digital watch, especially vs a mechanical watch where a mickey-mouse digital is more accurate than even a COSC mechanical.

But my initial point is that your game is not so much about recognizing the time, even the exact time, but about entering it into the keypad.

Maybe add a multiple-choice mode - show the analogue clocks, pick the digital match.