Ask HN: Is there a nice, native iOS HN client that supports “Mark above as read”

I'd really prefer to use an iOS app instead of RSS if possible, and currently RSS enables me to "mark all above as read" on stories and not re-read the same ones when looking for new content.

I know there are a bunch of third-party iOS apps out there, but can anyone recommend a nice one that does this? It's OK if it's just for that one device, not synced through iCloud or some other cloud service.