Apple Screen Time
iOS · built inClaims: App limits and downtime, enforced with a Screen Time passcode.
The escape hatch it shipped with
App limits ship with an “Ignore Limit” button. Unless “Block at End of Limit” is switched on — an option that only appears once a Screen Time passcode exists — the limit is advisory and one tap clears it.
Change the system clock
Moving the device's date or time in Settings has been reported to drop the configured limits, on Apple's own developer forums.
Apple Developer Forums — Screen Time bypassed by changing date and timeApple Community — bypassing Screen Time app limits
Delete and reinstall the blocked app
Deleting and reinstalling a limited app has been reported to clear its limit, unless installing and deleting apps is separately disallowed.