Want to run a PWA in the background?
Easy, just play music constantly, and the OS won't kill the app.
nostr:nprofile1qqsqgc0uhmxycvm5gwvn944c7yfxnnxm0nyh8tt62zhrvtd3xkj8fhgpzamhxue69uhhyetvv9ujuurjd9...
The same trick works for native apps as well, including iOS