#ios

31 items tagged "ios".

Posts

• 16 Years of iOS Concurrency: From Dispatch Queues to async/await

  Posted on:May 14, 2026

  · 10 min read

  Concurrency hasn't gotten easier. The sharp edges just moved. Here's what survived from the dispatch_async era, what Combine got right, and where async/await and actors actually help — from someone who's shipped iOS apps at scale across all three.

  swiftiosconcurrency

• Why Flutter Can't Easily Do Liquid Glass

  Posted on:January 12, 2026

  · 5 min read

  Apple's Liquid Glass isn't just a blur — it's a physically-based, real-time glass simulation that samples the entire render tree behind it. Flutter paints onto a single texture. Those two facts are incompatible.

  flutteriosrenderingui-design

• Opaque Types in Swift: Understanding the `some` Keyword

  Posted on:February 15, 2025

  · 6 min read

  `some` doesn't just hide a type behind a protocol — it preserves the underlying concrete type identity through the compiler. Here's what that means for performance and why `any` exists alongside it.

  swiftioslanguage-design

• SwiftUI Under the Hood: Its Architecture and Relationship to UIKit

  Posted on:June 5, 2024

  · 10 min read

  SwiftUI is not a black box replacement for UIKit. It's a view graph diffing engine that runs on top of UIKit and AppKit. Here's how it actually works.

  swiftuiiosuikit

• Understanding Copy-on-Write in Swift

  Posted on:January 10, 2024

  · 5 min read

  Swift's value types avoid expensive copies until you actually mutate them. Here's how CoW works under the hood.

  swiftios

• Best Practices for Unit Testing iOS Apps

  Posted on:October 20, 2022

  · 2 min read

  Tests are automated. Run often. Preferably on each commit or pull request to quickly catch regressions.

  iosswifttesting

• Reference Cycles in iOS

  Posted on:September 20, 2022

  · 1 min read

  Strong reference cycles prevent instances from ever being deallocated, causing a memory leak.

  iosswiftmemory

• Concurrency and Parallelism in iOS

  Posted on:September 19, 2022

  · 1 min read

  iOS offers several ways to run tasks concurrently. This article is a short summary of them.

  iosconcurrencyswift

• Low Memory Crash Events in iOS

  Posted on:January 10, 2016

  · 2 min read

  How crash reporting tools work.

  iosmemory

• Coordinate System in SpriteKit

  Posted on:November 10, 2015

  · 2 min read

  Differences between SKScene and SKNode when it comes to coordinate system in SpriteKit.

  iosspritekit

• Advertising Identifier in iOS

  Posted on:August 10, 2015

  · 3 min read

  An alphanumeric string unique to each device, used only for serving advertisements.

  iosobjective-c

• CMMotionManager Noise Reduction in iOS

  Posted on:July 14, 2015

  · 2 min read

  A way to smooth the accelerometer readings using a Low Pass Filter.

  iosobjective-c

• Playing Sounds in SpriteKit using SKAction

  Posted on:April 10, 2015

  · 3 min read

  A couple of tips and tricks and useful code snippets for playing sounds.

  iosspritekit

• iOS NSRunLoop in a Nutshell

  Posted on:April 9, 2014

  · 2 min read

  An event processing loop that you use to schedule work and coordinate the receipt of incoming events.

  iosobjective-cconcurrency

• MVC Design Pattern in iOS

  Posted on:December 25, 2011

  · 4 min read

  Model-view-controller concept in the iOS world.

  iosobjective-carchitecture

Projects

• 

  SRF News, Meteo & Sport

  Developing the SRF News, SRF Meteo and SRF Sport iOS apps — the Swiss public broadcaster's most-used mobile products with over a million daily active users.

  ios swift swiftui apple
• 

  Lichess Mobile

  Open source contributions to the Lichess mobile app — native iOS widgets, puzzle features, openings explorer, and app infrastructure for the world's most popular free chess platform.

  ios flutter dart open-source lichess
• 

  eCarUp

  EV charging platform — iOS apps, admin portal, backend API, infra, and CI/CD. Rewritten from Xamarin to Swift.

  ios swift angular dotnet azure kubernetes devops xamarin
• 

  AMBOSS

  iOS apps, Python backend API, and CI for the AMBOSS medical knowledge platform.

  ios objective-c core-data python devops
• 

  DasKochrezept

  iOS app for DasKochrezept.de, a leading food magazine in Germany. Featured by Apple.

  ios objective-c
• 

  MyDriver (Sixt)

  Customer and driver iOS apps for the myDriver limousine service — later rebranded as SIXT ride.

  ios objective-c
• 

  igobubble

  Social discovery iOS app and socket-based C# .NET backend API.

  ios objective-c .net csharp
• 

  TrendU

  Mobile shopping iOS app with custom Tinder-like feed animations.

  ios objective-c
• 

  Tuba.fm

  Personalised radio app for iPhone. Winner of Mobile Trends Awards 2012.

  ios objective-c core-audio
• 

  Spacequest

  iOS game, space shooter, written in Swift using SpriteKit

  ios swift spritekit game
• 

  Newton's Melodies

  iPhone/iPad app where users create melodies by bouncing falling apples onto wooden planks. Custom physics engine built from scratch with OpenGLES.

  ios objective-c opengles game
• 

  Orange Wednesdays

  iPhone app for browsing cinema repertoires, watching trailers, and booking tickets with the Cinema City and Orange IMAX cinema network in Poland.

  ios objective-c
• 

  Payback PL

  iPhone app for the Payback multi-partner loyalty program in Poland — collect points, browse coupons, and track rewards. Reached top 50 in the Polish App Store.

  ios objective-c
• 

  BBQ

  iOS app with information about public grilling spots in Berlin

  ios objective-c core-data mapkit
• 

  Animation extensions

  A useful UIView category containing a set of most commonly used animations like rotation, flip, shake and others.

  ios objective-c uikit cocoapods animation
• 

  Sprite Additions

  A UIImage category for handling sprite sheets — extract individual frames from a texture atlas with ease.

  ios objective-c animation sprite