Android Question Remove all ads with rewarded advertising.

in the rewarded event you can store the current time ticks + 1 hour ticks.

in your load event then you just check if the current time > than the stored ticks.
if bigger preload the ad, if smaller return from the sub.
or you can do it in the display sub aswell.

unless you have thousands of people using that I think it's better to stick with regular interstitials.