Classic versions lack the heavy ad layouts, complex season passes, and endless pop-ups found in contemporary free-to-play structures.
Modern apps are built for 64-bit architectures and require newer iOS frameworks. iOS 5.1.1 is a 32-bit operating system. If you try to download Subway Surfers from the App Store today on an older device, you will likely meet an error message stating that the app is incompatible with your hardware. subway surfers ipa ios 511