Good little free game based on the little legends book series - my kids seem to enjoy reading the books which are a twist on traditional fairy tales.
Can't speak for iOS, but on Android there are no in-app purchases and the only permission needed is network access.
Apple App store link: itunes.apple.com/gb/…t=8
Google play link:play.google.com/sto…_GB
Amazon app store link:amazon.co.uk/Me-…Day