Mobile Safari supports PWAs and quite a bit of infra like service workers. Last time I looked it didn't work well in the background (reloads page on resume) but

Mobile Safari supports PWAs and quite a bit of infra like service workers. Last time I looked it didn't work well in the background (reloads page on resume) but seems like they have most of the building blocks. EDIT: This post [1] says background switching should be working in iOS 13. [1] https://medium.com/@firt/iphone-11-ipados-and-ios-13-for-pwas-and-web-development-5d5d9071cc49 https://medium.com/@firt/iphone-11-ipados-and-ios-13-for-pwa...