Hello.

If there is no one around to read your tweet, does it make a difference?

TL;DR - Here is a demo Code Our team has built a lot of Progressive Web Apps recently to demonstrate how we think they can be built: Airhorner, Voice Memos, Guitar Tuner, SVG-OMG are a few that spring to mind. One thing that is common across all of these sites is that they have no server component to store and synchronise data. We built these sites as examples and reference implementations of the types of experiences that we can deliver on the web, they were never intended to be full "Apps" that you would build as a business.