Stripe iOS SDK - Accept both Apple Pay and credit card payments easily on iOS
Sunn - A smart light fixture that brings the changing sun indoors
Pilgrim SDK by Foursquare - Location data to understand & engage with your customers
Radar - Radar - Location sharing for friends and teams.
MightySignal Top SDKs - Most used SDKs in top 200 free iOS apps. Learn what to use.
Indoor Location - SDK for indoor location as a service with Estimote Beacons