List of fonts available on IOS & Android? (without having to go to custom fonts)

so overall Rob, better to invest the time into learning how to do custom fonts to be safe then right?

It depends on the application.  I’ve got a couple of apps that native.systemFont is fine.  I have another that I had to drop some if statements in my main.lua to define what fonts I wanted, but I used device fonts.  Then in another, it was call custom fonts.

Custom fonts are not that difficult to get working.  If you are looking for fonts that can be used legally, I recommend looking at these sites:

http://www.fontsquirrel.com/

http://www.dafont.com/

They list which fonts are public domain, which are completely free, and which can be used commercially.

Unfortunately, some fonts don’t play so well with mobile devices.  I’ve found a few that work poorly on Android, but work fine on iOS.  (I know, shocker!)  So adding a custom font will likely mean some more QA time for you.