This looks like a lovely little freebie, as the digital book ''5 Minute Tales: Bedtime Stories' is currently free at Google Play. This is only for android devices so will not work on iPads or iPhones.
There's not a huge amount of detail about what the stories are, but they are short original stories rather than traditional fairy tales:
This wonderful collection of snoozy stories is ideal for a quick read before bedtime. Meet a sheep who can't sleep, a lonely night owl and some naughty aliens who just want to play. Full of fun and adventure, these short and sweet tales are ideal to snuggle up with!
The link above gives details of how to download the stories, and also the types of devices it is compatible with. The reviews are really good, and for free it's definitely worth a go wouldn't you say?
Thanks to charliegreig84 @ HUKD