The code for Eyes Up seems to be public [0](although there’s no license, so presumably is copyrighted).

I bet that one could refactor it into a PWA.

[0]: https://github.com/explorealways/eyes-up

I’m going to guess if you opened a ticket the writer would provide it as a permissive licence.

If only there were 2 big corporations hellbent on making PWAs and side-loading harder/worse… and perhaps that duopoly could then donate some money for the president's ballroom, and maybe they could even be found guilty of price-fixing wages, and…

EU folk, we really need a 3rd platform. Let's go.