The Acuity Scheduling PHP SDK by Acuity Scheduling provides examples and a standard library for integrating with the Acuity Scheduling API using PHP. Acuity Appointment Scheduling is an online appointment booking service that can be accessed via mobile devices by both users and clients. You can learn more about developing for Acuity Scheduling at developers.acuityscheduling.com.
Payleven, the Square equivalent for the world outside of the US, has launched an API to complement its mobile payment device. Prior to the API, use of Payleven's mobile payment device required downloading the Payleven app (similar to Square's current model). However, the API allows developers to integrate Payleven's functionality within third party apps.
Smartphones will continue to play a bigger role in our lives. The results of a recent study by research firm Mind Commerce confirms this. According to the report, the telecom networks API industry will grow 38% and account for $157 billion in global revenue by 2018.