Fitness application with a list of features:
• different social network integration (facebook, twitter, google+)
• deep integration with Firebase services, such as Authentication, Cloud Firestore, Storage, Cloud Functions, Crashlytics, Performance, Test Lab, Analytics
• billing client for subscription purchases
• complex UI interface and smooth animations
integrated video player with actions controller, media cache
• deep linking with Branch.io
• push notification delivery with OneSignal service, custom users segmentation.