Stephen Uffelman

iOS & macOS developer crafting thoughtful, native experiences for Apple platforms.

Building for Apple platforms since the early days of the App Store.

With over a decade of experience developing for iOS and macOS, I focus on creating polished, performant apps that feel right at home on Apple hardware. I believe great software is invisible — it gets out of your way and lets you focus on what matters.

From architecting complex SwiftUI interfaces to fine-tuning Core Animation details, I care deeply about the craft. I've shipped apps used by hundreds of thousands of people and contributed to open-source projects across the Apple ecosystem.

10+
Years of Experience
20+
Apps Shipped
4,000,000+
Users Reached
5★
Average Rating

Selected Work

📱

TaskFlow

A native task management app for iOS and macOS with seamless iCloud sync, widgets, and deep system integration. Built entirely in SwiftUI.

SwiftUI CloudKit WidgetKit
🎨

Paletteer

A macOS color palette tool for designers and developers. Features a native interface, color space conversion, and export to code.

AppKit Core Graphics macOS

Runlog

A fitness tracking companion for runners that integrates with HealthKit and delivers personalized insights through on-device processing.

HealthKit Core ML Charts
🔧

NetProbe

A developer utility for macOS that monitors network traffic, inspects API responses, and provides real-time debugging tools.

Network.framework Swift Concurrency macOS

Tools & Technologies

Languages

  • Swift
  • Objective-C
  • Python
  • JavaScript
  • C / C++

Frameworks

  • SwiftUI
  • UIKit / AppKit
  • Combine / Async-Await
  • Core Data / SwiftData
  • Core Animation

Platform

  • Xcode & Instruments
  • CloudKit / iCloud
  • TestFlight / App Store Connect
  • CI/CD (Fastlane, Xcode Cloud)
  • Git

Let's build something great together.

I'm always open to interesting projects and collaborations. Reach out and let's talk.