Re: United? Kingdom
I struggle to understand why the UK implemented three tracing apps.
It's a point of principle. The Scottish nationalists won't accept anything from London as being good for them, and will always be able to do it better. The NI unionists might have accepted a UK-wide app, but the Nationalists won't, and if Scotland is doing something different they'll both agree to do their own as well just to justify having their own assembly.
Why doesn't Wales have its own app? (asking just for fun)
It would have to be in Welsh, maybe they couldn't find enough programmers at short notice? Give them time.