For the Chrome extension, I started by just getting compliant with manifest v3, so Chrome would stop complaining. But now that it's relatively fresh in my mind, I'm going to redesign it so that the most common case (save this page) is one-click.
I think the reason a lot of the mobile apps suck is that the API is underpowered to do what those apps need. Once I get the v2 API out the door, if it turns out that no one wants to build a proper modern app on it, I'll roll up my sleeves and do it myself. But getting that new API stable and running is top priority.
I would love to hear your thoughts about what a minimalist 'save only' iOS app should behave like, either here or at support@pinboard.in.