If that thanks was directed at me, I have to reject it, as I made no such suggestions about Naka. I only learned of these SIMs a few days ago.
I did however add Koko to the wiki as I saw it wasn't mentioned. Perhaps I can add more info on it when I have time.
Good to know about the Drimsim app being not adequately translated into English. I also don't like the fact that there seems to be no way to access the account from the website. That alone may make me hold off on buying one for now.