seniorObjective-C
Why do large iOS apps suffer from startup regression?
Updated May 17, 2026
Short answer
Heavy dyld binding, +load methods, and synchronous initialization slow startup.
Deep explanation
Startup regression comes from increased Mach-O size, more dylib binding, Objective-C +load execution, and main thread blocking initialization logic.
Unlock with a Pro subscription to view this section.
View pricingReal-world example
No real-world example available yet.
Unlock with a Pro subscription to view this section.
Upgrade to ProCommon mistakes
No common mistakes listed yet.
Unlock with a Pro subscription to view this section.
Upgrade to ProFollow-up questions
No follow-up questions available yet.
Unlock with a Pro subscription to view this section.
Upgrade to Pro