WHAT I THINK
Wijng is still in beta, so some of the features are not operational yet. The activities seem interesting, if not particularly original. A couple of negative points: some of the English is not very English ('Do you like to start a further exercise?'), and there are a few spelling mistakes ('perfekt', 'to practice'). And why have hints in German? Non-German speakers will find this offputting. Still, these are minor criticisms, and as more resources are added, Wijng should become a useful addition to the ever-expanding list of ELL websites.
Wijng has no real origin, we like the short and very unique spelling. In the logo you might imagine the "i" and "j" like two people looking at each other, we thought about making this a more prominent feature in future. A lot ask us, how to pronounce the word, we like to pronounce it like "wing" but with more emphasis on the "i".