On the other hand, I have used some web apps that, when I "Install as an app" on Android, work pretty well. Sure, there are a couple of annoyances mostly relat

On the other hand, I have used some web apps that, when I "Install as an app" on Android, work pretty well. Sure, there are a couple of annoyances mostly related to notifications and how it works when switching between apps, but these are quite minor parts of the app - sure, they're annoying and need to be fixed but it's also important to acknowledge that the other 99% of the app was running correctly and with decent performance on my mid range phone. I think that the remaining issues, including perform, are fixable and will be fixed over the next few years. You might not write one fully unified code base but you'll at least be able to use 99.9% of the same code with just a little bit of glue on top to make user accounts and notifications work on other platforms.