Note: GBA4iOS (built by iOS developer Riley Testut) is no longer being worked on by Testut. Launch it from there and start playing the old retro games. When installation is completed, you will be able to see Delta Emulator icon on your iOS 11-11.3 powered iDevice.
Download Delta Emulator IPA file and Install without Jailbreak Delta Emulator for iOS 11 does not require jailbreak and it can be installed using its IPA file and Cydia Impactor.