I also created an authoring webapp, Ryuzine Writer, for creating documents in the correct format and previewing them in a device simulator. Ryuzine Rack, a newsstand webapp, followed shortly thereafter. And last but not least, Ryuzine Press, a plugin for WordPress that bridges curated selections of blog posts into the Ryuzine Reader and replaces an archive page with the Ryuzine Rack newsstand.
Since the release of the first public beta in 2011 all four apps have undergone numerous updates to keep pace with the fast-paced changes in both devices and web standards. I just released Version 1.0 as open source software at the end of Summer in 2015.
With the exception of a couple of other open source projects I adapted into mine, I wrote the rest of the code by hand in TextWrangler and did a lot of testing on actual devices and in emulators and simulators. I also designed the UI, icons, logos, and developed the Theme system and Add-Ons API.