- Native iOS (Objective C, Swift); - Device : Bluetooth Low Energy (BLE), iBeacon; - Cloud backend: Firebase; - WebRTC, OpenWebRTC, Wowza; - Graphic Designing: Photoshop, Sketch; - SQLite, CoreData, ActiveRecord; - Facebook API, Instagram API; - Google Map, Apple Map; - In-App Purchase; - iAd, Flurry, Testflight, Crashlithics; - ReactiveCocoa; - Github, BitBucket; - Vuforia.