Which apps are your 7 year olds using?

[concooktion]

Looking for some recommendations for my 7 year old, with no internet required to play.

She likes Magnus Kingdom of Chess, Minecraft and has a few maths and reading apps which are a bit babyish for her now.

Not an app, but my 7 year old loves the spelling frame site. Everyone in their class and school has been given a login and the more spellings you practise, the higher you climb on the class league tables.
They all love practicing their spelling to get to the top of the table with the highest score