I don't normally chime in on stuff like this but you're right it does look alot like Noisli (http://www.noisli.com/) I remember when that appeared on HN a while back as well. Nothing wrong with cloning something on your own for fun but it seems like they didn't disclaim this anywhere?
Evidently this app is extremely similar to Noisli, Noizio and ASoftMurmer. Nothing unexpected, but certainly it seems that these four apps all share a very similar design aesthetic. Would be interesting to see who was first to the punch - presumably Noisli.
And this one is so much better for actual RPGs, it has sounds that are much more relevant for your typical D&D session. No coffee shops or highway sounds, but instead creature growls, rattling of horse-drawn carriages, and the clanging of a blacksmith's hammer.
Actually, it's got a coffee shop! Check out "lively cafe". And for more control, my group loves the soundpads. Click on the soundpad link or the tab. you can create some amazing environments with these.
Same here. Windows, firefox, with or without ublock. Also unrelated (or maybe it is?), the audio downloads from soundcloud are returning a 429 Too Many Requests now.