Custom Code Hooks Vs. API
We recommend purchasing the Custom Code Hooks if you will be using the NolaPro API to integrate with your own application.
The NolaPro API allows you to get data from and send data to NolaPro when your custom program needs to. The Custom Code Hooks allow you to write php code that will be triggered from inside NolaPro when an event in NolaPro occurs like adding or updating a customer.
So, the Custom Code Hooks lets your code perform an action when something happens inside NolaPro. The API provides a window into NolaPro when some event happens in your custom application.