I have just realised that I have been using Opera Mini by Nhorizon Innovation (Beijing) Software Ltd all this time. If you scroll further down the App Store, we find another one by Opera Software ASA.
(I could not get the pages in English for some reason)
https://itunes.apple.com/cn/app/id528923120 - Nhorizon Innovation (Beijing) Software Ltd
https://itunes.apple.com/cn/app/id363729560 - Opera Software ASA
What is this about; could anyone enlighten me?