The settings in my app can be customized to make it as minimalist as needed (like hide favicons, hide the metadata, only show titles etc). There’s also settings for color choices and a setting to use lower contrast text. Font sizes and paragraph spacing can be changed to make it more compact. My app has a built in adblocker too for the built in browser.
My app has reply push notifications too which I don’t think any of the other HN apps have.
As for the font, Product Sans is not legally allowed to be used by third parties as far as I am aware:
https://graphicdesign.stackexchange.com/questions/102262/can...
My app allows you to change fonts too and it supports Montserrat font which looks visually similar to Product Sans.
