Given the significant security risks, there is no "safe" way to install AmS1gn or similar third-party app installers. The best "how-to" guide is to understand the risks and avoid them.

: Once the profile is active, you can use the AmS1gn app to download and sign .ipa files directly on your device. Regarding APK "Conversion" (Use Caution)

To install an app, tap , select any .ipa file stored in your local Files app , and hit Sign .