I am really liking what developers are doing with in app purchasing. I think it could lead to some pretty cool try before you buy solutions. The latest I have heard of is S4BB’s Font Master which offers up 18 free fonts for anybody to use preloaded in the app. If you wish you can purchase an additional 60 fonts for $0.99. They have also redesigned their user interface in an update this week along with some bug fixes.
The fonts bundled in Font Master include: Blur, Blurrr Letters, Bo Chen, Chamignon Alt Swash, Dufay, Fifa, Gears of Peace, Jacked, LDR, Mucha, Old Print, Paper Cuts, Perfect Dark Zero, Rune Scape, Taper, Vavont, Vipond, Yapix.
You can pick up Font Master for free in App World. You need an OS 6.0+ device for this app to work.