In the next update, when you turn NostrNet.work into a PWA, it will become an offline app like any other native app even on IOS.
I know this doesn't make any sense, but it is somehow possible, so we will do it.
Discussion
This is a really cool and good idea! Looking forward to it :)
When offline really shines and makes sense is when you can still take pictures from your devices, writing notes, hit publish, and it will publish when devices gets online.
I don’t think you can do it on behalf of the clients right?