There is a very limited set of font families in PowerApps it would be great to have more options or to be able to install new fonts.
This is under consideration, but is currently not planned at this time. Others should continue to vote, as well as to comment on business requirements to drive this priority.
Thank you for your patience as we continue to improve services and features in this area,
definitely needed, need gothic font!
Have you tried replacing the default "Font.'Open Sans'" with something like "Century Gothic" or "Franklin Gothic" in the Font property?
It works with many of my installed fonts, but not all.
Also the end users of the app need the Font on their device.
At least some relief 🙂