HackerWeb - A simple and readable Hacker News app
Readwise - Effortlessly rediscover and organize your Kindle highlights
Hacker News Stack - Focus on the really fresh and unread news in Hacker News.
Klib - Kindle & iBooks Highlights Manager
HNBuddy - An elegant iOS client for Hacker News ✨
Clippings.io - Organize the notes you make on your Kindle