How are you handling the text extraction with Readability.js? Does that run in a WebView in the background? I've built a similar, albeit less feature-complete, read-it later app in the past [1]. Spent most of my rewriting the core of the Postlight parser [2] in native Swift.
Anyway, cool project, and I'd probably buy this once its available.
The screenshots on the website don’t include images, so I was under the impression they’re not supported until I re-read the post here – it might be beneficial to add some.