The UK National Health Service app is restricted to the UK only: https://play.google.com/store/apps/details?id=com.nhs.online... — that's not too crazy, as it's also only useful for people resident in the UK.

The McDonald's UK app is also restricted to the UK: https://play.google.com/store/apps/details?id=com.mcdonalds.... which is daft, why wouldn't they want tourists and visitors?

Searching "<city> transport app" with large cities, the first restricted example I found is for Sheffield, which is limited to the UK: https://play.google.com/store/apps/details?id=com.yorcard.ts... . (It's the official app, the contact email ends .gov.uk.)

An example in the article, of paying for on-street parking, is also blocked for tourists: https://play.google.com/store/apps/details?id=com.paybyphone...

I'm not going to bother registering an additional Google account when I visit Sheffield then want to take the tram to McDonald's.

(By "restricted" I mean Google Play reports "This app is not available for your device" which is a current phone registered in Denmark.)

yes but you have a solution. it sucks (make a 2nd account) but it works. iphone has no solution.