Cornelius Mark

Crafting macOS & iOS apps that scale, perform, & delight! 📱💻 From modular code to bug-free builds, I bring your vision to life. Ready to create something amazing? Let’s chat! DM me or reply below. 👇 #AppDev #iOS #macOS [1/4]

I craft scalable macOS/iOS apps that grow with you. 🌟🌟🌟🌟🌟 "Great communication, fluent English, quick action." Need a robust app? DM me let’s talk!

AWS or Azure for app scaling? What’s your stack? 👇

Figma or Sketch for iOS prototyping? What’s your tool? 👇

SwiftUI previews cut UI dev time by 25%. What’s your SwiftUI hack? 👇

I make macOS/iOS apps run like lightning. From CPU to memory, I optimize it all. Need a faster app? DM me let’s tune it!

I turn crash logs into solutions. Specializing in macOS/iOS debugging. 🌟 "Mark is very professional and patient developer." Need bug-free apps? DM me let’s talk!

I turn crash logs into solutions. Specializing in macOS/iOS debugging. 🌟 "Mark is very professional and patient developer." Need bug-free apps? DM me let’s talk!

From Swift to SwiftUI, I build apps that shine on macOS and iOS. Need cutting-edge code? DM me let's build it!

Reduced a macOS app’s CPU usage by 30% with async dispatch queues. Profile with Instruments first. Got lag? DM me let's fix it!

Maintainable code saves 40% on future dev costs. What’s your top coding rule? 👇

Also, it's possible to build all the nifty SwiftUI graphics in UIKit. It's just more work.

From kernel panics to UI freezes, I’ve debugged it all on macOS. 🌟 "Mark is very professional and patient developer." Need a bug-free app? DM me let's get started!

Revamped a macOS app’s App Store page. Click-through rate rose 30% with better visuals. Struggling with ASO? DM me let's fix it!

Scale your UI with SwiftUI. DM me let's build it!

Figma or Xcode for iOS prototyping? What’s your tool? 👇

Built a SwiftUI macOS app with zero crashes by using Combine for state. Cut dev time by 20%. 🌟 "Mark is very professional and patient developer." Need SwiftUI help? DM me let's code!

Instruments or manual profiling for iOS performance? What’s your choice? 👇

Protocol-oriented or object-oriented for Swift? What’s your pick? 👇

Use breakpoints with conditions in Xcode to catch bugs 30% faster. Set them on suspect variables and save hours.

CloudKit or Firebase for iOS apps? What’s your pick? 👇

Keywords or screenshots: What’s more critical for ASO? 👇

Native iOS navigation or custom UX? What’s your take? 👇

I specialize in SwiftUI for seamless macOS/iOS apps. 🌟 "Mark is an amazing freelancer. Close attention to detail." Ready for a sleek app? DM me let's talk!

A client’s iOS app had 2-second UI lags. Profiled with Instruments and cut render time by 60%. Got performance issues? DM me let's fix them!

I write macOS/iOS code that's easy to maintain and scale. Ready for a future-proof app? DM me let's build it.

Xcode or LLDB for debugging? Fight me! 👇

What's your mindset for tackling tough macOS problems? Share it! 👇🏻

How do you keep your macOS code simple and effective? Share your tips! 🕵️

Use lazy loading in iOS/macOS apps. It cuts startup time significantly.

Need maintainable iOS code? DM me let's make it shine!

Want apps that don’t implode? DM me let's build it right!

For those who like to know: ChatGPT is only available in Xcode 26 on MacOS Tahoe.

Yes, it's WWDC.

What's your mindset for cracking tough iOS/macOS problems? Share it! ⬇️

Simple code, fewer problems. DM me let's code it clean!

What's your go-to trick for boosting macOS app performance? Share it! ⬇️

⭐⭐⭐⭐⭐ Mark is very professional and patient developer. Looking forward to work with him again. - Metronome for iOS app.

iOS bugs driving you nuts? DM me let's fix them quick!