Scala Test-State VS cazadescuentos

It actually been rock-solid for many, many years now! I've built quite a few things with it and introduced it to teams who picked it up very quickly and with no major problems. I've never had any production problems with it EVER and I've been living and breathing it pretty much every day for ages now. It's very, very unit testable (oh! check out Scala Test State if you're interested in really powerful and concise Scala.JS testing) so it's nearly trivial to have to very well tested webapp, including mouse clicks, key presses, whatever you want. Awesome awesome stuff and the Scala.JS team deserve some kind of tech Nobel prize imo. It's been a game changer for me.

Still, you don't need to because you can write a simple Scala.js PWA that gets deployed to the Play Store as a Trusted Web Activity, it is a super nice experience (here is one example).

I'm biased to monorepos, check the template I posted above because it does exactly that, I even have a monorepo that includes a browser extension sharing code with backend/webapp

cazadescuentos-chrome: a price-tracker browser extension.

Slinky does support react-native but I haven't tried it, the app I was referring to is this pwa with this small android wrapper (playstore link), the android wrapper was mostly auto-generated and it just have a small update to support sharing data to it from the browser, I understand the same can be done for iOS but I haven't tried just because I don't have a Mac.