Do you allow your kids to play gadgets/ipads often? If so, for how long?

i am abit more strict than the daddy. the kids are with me on weekdays... i dont give them any screen time. but when the dad comes home... he ill let them play 30 to 1 hr.. when they are fed... i will let them play only on the weekends 2 hrs thw most.... but depends if they behave... if not i will geound them from even watching on th tv