Answer 1

If you've got a desktop, it's better than the Code-Playground. If you're just having a phone, Code-Playground is better than anything else.

There are limitations to some advanced modules in the Code-Playground, a PC helps here.

P.S. When you can't use PC, use mobile and vice-versa.

(edited)

Answer 2

Yes it is a good one. It supports a wider range of modules than Code Playground

Answer 3

I find the playground, fast and easy to use for quick code snippets. I like the fact that code in the playground can be shared easily. But if you really build something use a pc while the playground is very limited.