Salut, @Gopal!
I will look for some videos on YouTube to see how that Pie Menu works for the iPad.
I hope that the image with all the icons at once is only for the settings, then only the necessary ones will appear depending on the context - draw, edit, etc… I will also read/translate the article to find out the details.
And of course, they will appear soon in the Windows, web/desktop versions (hopefully as a plugin) 
Thank you for giving me this information!
Have a nice day!