Developed Mate4Mate, an iOS application for sailors andnavigators, from concept to AppStore publication.Leveraged Swift, UIKit, CoreData, CoreLocation, andSwiftAA to build core features like true wind calculations,GHA, TLHA, and ETA. Managed the entire developmentlifecycle, focusing on code quality, performanceoptimization, and adhering to SOLID principles. Laterrefactored the project to MVVM architecture to improvemaintainability and scalability