Yep. I am the developer of HN client HACK for iOS and Android and a bunch of users emailed me asking if my app was broken. Looks like something bigger is afoot.
Harmonic most likely uses Algolia for the data whereas my app uses the HN website. So Algolia delivers a cache copy from their own servers whereas mine scrapes the HN website itself. Hence the difference. Also logged out pages were working much better than logged in (HN delivers caches copies for logged out users).
