MayISBN is a library written in Objective-C for validating and formatting ISBN (International Standard Book Number) offline. It supports either ISBN-10 and ISBN-13. The library's primary intent is using it in the MayLibre-App.
Add the following to your Podfile:
pod 'MayISBN', :git => 'https://github.com/jobrunner/MayISBN.git', :tag => '1.0.0'
It it is still under development. Latest update on ISBN ranges: Wed, 12 Apr 2017 11:51:07 CEST.
This projects uses the WTFPL license (Do What The Fuck You Want To Public License)