Attique U.

Your iOS app is crashing, stuck in App Review, or the last developer disappeared? That's exactly the work I do. 14 years building and fixing iPhone and iPad apps in Swift, SwiftUI, UIKit and Objective-C — 116 jobs completed here on Upwork and 8 apps live on the App Store. WHAT I FIX AND BUILD • Crashes, memory leaks and performance problems (Instruments, crash logs, symbolication) • App Store rejections — finding the real cause, fixing it, and getting the app approved • In-App Purchases & subscriptions with StoreKit 2 — purchases that fail, don't restore, or don't credit • Projects another developer left unfinished — I get up to speed on existing codebases quickly • Legacy Objective-C apps — maintenance, iOS version upgrades, and gradual migration to Swift/SwiftUI • New features and full apps in SwiftUI, with REST/WebSocket APIs, Firebase and Core Data HOW I WORK 1. Diagnosis first: I reproduce the problem and send you a short written explanation of the root cause before changing anything. 2. The fix: clean, readable code that fits your existing project — no unnecessary rewrites. 3. Proof: tested on real devices, with clear notes on what changed and why. You get regular updates and straight answers, including when something will take longer than expected. INDUSTRIES Health & medical, fitness, fintech, e-commerce, and media/streaming apps. TOOLS Swift, SwiftUI, UIKit, Objective-C, Combine, async/await, StoreKit 2, Core Data, Firebase, Core ML, MapKit, push notifications, Xcode & Instruments, TestFlight, App Store Connect, Fastlane, Git. If your app has a problem that needs an experienced iOS developer, send me a message with a short description — I'll tell you honestly how I'd approach it.