This app was mentioned in 3 comments, with an average of 3.33 upvotes
Just some info: this is the English translation of Japanese game 箱庭シティ鉄道
This is the first from Kairosoft that is actually premium ($5 or £3.80) but contains IAPs. According to reviews, the IAPs are very limited and don't affect the game too much.
The ones that are on Android but not yet translated are:
Meow Meow Story: https://play.google.com/store/apps/details?id=net.kairosoft.android.catjump