If you've made a "web app", it must be accessible through the web, i.e. it is either a web site or a part of web site, according to all sorts of laws including

If you've made a "web app", it must be accessible through the web, i.e. it is either a web site or a part of web site, according to all sorts of laws including probably the ones mentioned by the GP post. Forget about the fear-mongering - think about the actual people with disabilities though.