[Tagbert]

That sounds like the app would need to implement their own RAM paging and that is a complicated and error prone endeavor and likely not worth the effort for he developer. I don't even know if an iOS app would have the system hooks to be able to do it.

[eviks]

why not just save the page as html? Isn't that what official Safari does with the reading list?

[saagarjha]

Pages can rewrite themselves at any time.

[eviks]

so? having something good most of the time beats having nothing all of the time