FF DIN Round is a sans-serif font. If you're thinking about using FF DIN Round then try 26px for headers. Give 16px a shot for content.
People commonly tag it as tech, din, rounded, app, coding, software, learning, teaching, modern and app launch/site. You can get it from Fonts.com and MyFonts.
Examples FF DIN Round on its own
In action 4 FF DIN Round samples
