Really nice! I like the fact that I can access all sections i.e. new, ask, show, etc.

Nit: I often get "Story type not supported" when tapping on posts.

Any plan to open source it or some parts?

Thats very strange. In theory it should support everything that isnt a poll. If possible, I'd very much appreciate you linking me to any posts that dont work for you so that I can test and fix it.

I'm not planning on open sourcing it at this point in time, but I'll probably do a blog post at some point discussing the most interesting aspects

This is brilliant. Did you use the Google Material Design default skin?

The UI is very reminiscent if Reddit Sync. Looks like I have found my new HN app.

Thanks, I'm glad to hear that :)

Warning: There's ads :(

Hey michael, thanks for checking it out :) Developing Yarn took a lot of time and effort and advertising is a small way to make up for that. Hopefully the quality and features make it worthwhile

Any chance of adding a donate button to remove ads?

Ive added an IAP to remove them now :)