AppForce1 Worklog: Refactoring an 8-Year-Old iOS App is Like Restoring a Classic Car

Send me a textJeroen shares his real-world iOS development journey working on a legacy app at Dawn Technologies. He details his systematic approach to modernizing an 8-year-old codebase that serves as a critical tool for companies.• Breaking down a monolithic App Delegate into dedicated managers with single responsibilities• Leveraging the existing feature flag system to safely deploy new implementations• Refactoring the walkie-talkie functionality with real-time audio streaming over WebSockets• Completely rewriting the chat system to use a modern service-based architecture• Overhauling the location tracking system to use iOS 17's new async location tracking APIs• Implementing WiFi settings fixes for iOS 16 compatibility using modern APIs• Maintaining a cleanup branch to remove deprecated APIs and fix compiler warningsCheck out Do iOS, the iOS development conference I'm organizing later this year. Visit do-ios.com for more information and tickets - link in the show notes.Join me in Amsterdam for Do iOS 2025, tickets and details available now. Lead Software Developer Learn best practices for being a great lead software developer.Lead Software DeveloperLearn best practices for being a great lead software developer.Disclaimer: This post contains affiliate links. If you make a purchase, I may receive a commission at no extra cost to you.Support the showDo iOS: https://do-ios.comRate me on Apple Podcasts.Send feedback on SpeakPipeOr contact me:Mastodon: https://hachyderm.io/@appforce1X: https://x.com/appforce1BlueSky: https://bsky.app/profile/appforce1.netLinkedIN: https://www.linkedin.com/in/leenarts/Support my podcast with a monthly subscription, it really helps.My book: Being a Lead Software Developer