The OneSignal iOS SDK by OneSignal is for iOS applications in Objective-C language to use with the OneSignal API. The OneSignal REST API allows developers to access the functionality of OneSignal for integration with other websites and applications. OneSignal is a push notification service for mobile and web applications and websites.
Developers worried about surpassing mobile app size limits can find salvation in the new modular SDK from MoPub. It allows developer to customize the SDK for only the ad formats they want or need to use. This means developers have more control over their app's size and can improve performance.
Pharmacy giant Walgreens has launched the Walgreens Pharmacy Prescription Refill API that allows mobile developers to integrate Walgreens' prescription refill technology. As long as an app has scanning capabilities (or another way of getting the ID into the system), developers can integrate the refill API and users can refill a prescription that was originally filled at one of Walgreens 8,000+ pharmacies.