We (in Europe) probably should be thankful that you are not using feet as thousands-separator over there in the USA... Or maybe separate after each 2nd digit, because why not... ;)
WestNordOst seems to be the user name of the main developer.
How exactly is the data used, does it go back to openstreetmaps?
I can give you one example. If you go to a bench and answer the question "Is it still there" with "yes", the bench object tracked by OpenStreetMaps will get a tag that is similar to "last-checked-for-existance: 03/16/2025". If you answer "no", it might get removed from the OSM database. So, yes, it results in changes in the OpenStreetMap database.
I think, this is looking very good. It has an Android app, which looks nice, it also allows adding "non-kitchen related stuff" (e.g. toilet paper) to the shopping list.
What the frick?