What types of API calls does Simpplr use?

There are three different API limits - 
  1. General API Calls
  2. Connect API Calls
  3. Chatter Rest API Calls

File Uploads anywhere in the app use General API call. 
On people profile we use Chatter Rest API call on page load and for any endorsement action we use one Chatter Rest API call.
For feed listing and interaction with feed we use ConnectAPI calls.