You will likely need a third-party unzip app from the App Store to handle file conversions. Step-by-Step Installation Guide
Once the installation finishes, the app icon will appear on your home screen, but it won't open yet. How To Install Ams1gn On Ios
AmS1gn is a third-party signing service and installer. Its primary appeal is the ability to install apps from outside the official App Store without always requiring a full jailbreak. Many users specifically look for AmS1gn as a workaround to run Android applications (APKs) on their iPhones. You will likely need a third-party unzip app
Ensure you are running a compatible version (typically iOS 13.0 or later). How To Install Ams1gn On Ios