- Built waterfall layout design for area route information with custom UICollectionViewLayout - Integrated MapKit and Polyline framework to present the riding route on map - Fetched route information from Strava API and decode data with Codable Mechanism. - Established a tutorial page by UIPageViewController - Saved user profile, group information and riding data in Firebase - Synchronize teammate’s location in real time with combination of the Firebase listener and Core Location - Generating QR code for inviting users to join a group - Integrated Apple Sign In and Firebase Auth for member Github Repo: https://github.com/IssueLo/ComBike App Store: https://apps.apple.com/tw/app/id1481185096