Since we are developing Designcollector Magazine for iPad (expected in April for our 8th Anniversary) we are interested in creative applications floating around. Here is an awesome app for typography geeks "Type Specimen"
Type Specimen is the first font viewer for iPad, revolutionizing the way digital fonts are presented today. It's an ideal tool for people who need to select fonts for projects - be it magazine design, corporate identity design, web applications, or book typesetting. Type Specimen is a quick and easy way to navigate the type foundry, containing over two hundred original font styles. Type Specimen allows you to categorize individual fonts, make comparisons, or see details of specific glyphs. All of this for free of course.