The Google APIs Client Library for Objective-C is a flexible, efficient library provided by Google for accessing its JSON-based APIs. This Library is recommended for applications that will be used on iOS or Mac OS X systems.
It is not uncommon for e-shoppers to create a cart on a website without the intention of making an immediate purchase. The motives behind abandoning a cart can vary; what matters is how companies take advantage of the information that can be gained with each cart that is left behind. Rejoiner is a company that helps online retailers capture, analyze and recover abandoned shopping carts. The company accomplishes this with their Rejoiner API.