Out of interest really - I'm not a huge fan of Screen time and a passing comment was made at Me yesterday that I was a 'mean Mummy' for how much I allow DD on the IPad when most of her Friends have free run 
(Remark was made by a School Friends Mum)
We don't allow any devices Mon-Fri, we also as a Family have a No screens day on Sunday. DD is allowed to play a game after School on Friday for an Hour before Dinner, then 2 Hours on Saturday Morning before activities. Is that too harsh? I can't see any benefit to allowing her to use it more? Very occasionally is there's a long car journey ahead she can watch a Movie on Netflix too.