Do I Need Mobile API to Use Mobile App of Cloud (SaaS) Edition of Orangescrum

No, you do not need to use Mobile API to use the mobile app of the Cloud (SaaS) edition of Orangescrum. The mobile app is designed to work seamlessly with the Cloud edition, and you can simply download the app from the App Store or Google Play Store and log in using your Orangescrum Cloud account credentials to access your projects and tasks on the go.