Show HN: AFRAME - simple iOS custom font viewer

Here's a little side-project I've just released. It's a super simple font viewer for iOS. There are tons of "look at the system fonts" apps, but I wanted one that could render custom fonts that I add using iTunes File Sharing. It works great now but custom glyph rendering on older iOS devices is not as performant as I would like. There is heavy use of caching to make it run faster over time. Any ideas for cool features that would be useful for a portable font viewer? Thanks

http://www.aframeapp.com/