Usama S.

🚀 Top Rated Plus | iOS & macOS Developer with 7+ Years of Experience | Expert in App Store Optimization (ASO) 📈 Over 1,660 hours on UpWork 🌟 100% Client Satisfaction | 5-Star Rating 🌐 Available Across US and Global Time Zones About Me: Are you looking for an expert iOS/macOS developer who delivers not just code, but exceptional user experiences? You've found the right fit! With 7+ years in iOS/macOS development, I bring a deep understanding of Apple’s ecosystem and a strong commitment to making apps your clients will love. I know that customer satisfaction drives sales—and I’m here to make your product shine. Every app I build reflects my dedication to performance, usability, and polish, ensuring it’s smooth, responsive, and valuable to the end-user. Core Skills & Knowledge * Languages & Frameworks: Swift, Objective-C, UIKit, SwiftUI, GoogleMobileAds, AVFoundation, SwiftyStoreKit, Cocoa, Rswift, Combine, Core Animation, Core Graphics, and MapKit. * Data Management: SQLite, RoomDB, Realm, CoreData, UserDefaults, and CloudKit for seamless data synchronization across devices. * API Integration: REST, Firestore, Firebase, GraphQL, Alamofire, and Codable for efficient and scalable web service interactions. * Advanced Features: * In-App Purchases (SwiftyStoreKit, StoreKit) * Push Notifications (Firebase Cloud Messaging, APNs) * Complex User Interfaces (Animations, custom transitions, adaptive layouts) * Multimedia (Image and video processing, live camera and microphone access) * 3D Models & Augmented Reality: Skilled in ARKit and working with 3D models for immersive, next-gen app experiences * Machine Learning (CoreML, Vision framework integration) * HealthKit and Core Motion for fitness and wellness applications * App Store Optimization (ASO): Expertise in app visibility, keyword research, A/B testing, and localizing apps for targeted markets. * Additional Expertise: Code refactoring, testing (unit, integration, UI), performance optimization, and memory management. Tools I Use * IDE & Editors: Xcode * API Testing: Postman * Version Control: Git, Sourcetree, Tower * Project Management: Jira, UpWork’s Time Tracker Apps I've Developed and Launched on the Apple Store: macOS Apps: Chatbot: Open Chat with AI Bot Design Fonts for Cut Machine Printing Space: Design Mockup PDF Converter Pro & Word Reader Themify: Icon Theme Organizer iOS Apps: Design Fonts for Cut Machine AI Interior Home Room Design AI Video & Movie Art Generator PDF Scanner Converter & Editor And Many More Why Clients Love Working With Me: Whether developing for iPhone, iPad, or macOS, I am passionate about delivering outstanding results on challenging projects. My experience includes launching multiple successful apps with rich features like extensive web service integrations and complex data structures designed to maximize performance. 🛠 Expert Problem Solver: Love working on tough or unique challenges 🌎 End-User Focus: Every decision keeps the user in mind, enhancing UX What You Can Expect: When you work with me, you gain a partner committed to your success. Let’s create your next success story together with an app that not only meets your vision but exceeds your clients’ expectations. Let’s bring your ideas to life! Thank you, and I look forward to working with you!