12 documents Album functions 6 documents Apple Watch functions 5 documents Background task functions 6 documents Download functions 9 documents iCloud functions 9 documents In-App Purchase functions 16 documents Kiosk functions 3 documents Multi-Touch functions 8 documents Permission functions 6 documents Phone functions 73 documents Sensor functions 9 documents Speech Synthesis functions 10 documents URI functions 10 documents Widget functions 5 documents