Interesting alpha version of a new book for Ruby developers wanting to use a IOS fronted:
iOS on Rails (Beta)
The reference for writing superb iOS apps with Ruby on Rails backends.
Once it comes out of Beta, this book will sell for $39. Get it now for just $29.Read a free sample
This book is really two books in one.The the first book covers building a backend API in Rails. We will demonstrate how to create a robust, clean, flexible JSON API. Along the way, we’ll discuss different approaches that we didn’t choose and discuss their drawbacks.
[From thoughtbot Learn : iOS on Rails (Beta): a book by thoughtbot]