No. Signing services like AmS1gn are popular precisely because they do require a jailbreak. They operate within Apple's enterprise app distribution rules, albeit in a way that violates Apple's terms of service.
A pop-up will ask for permission to install. Tap Install again. How To Install Ams1gn On Ios
Installing AmS1gn on iOS involves registering your device's Unique Device Identifier (UDID) and installing a configuration profile to enable private app signing. This service allows you to sideload apps without a computer and bypass the standard 7-day certificate limit. Step 1: Obtain and Register Your UDID check out this tutorial:
For a visual walkthrough of the installation process for these types of tools, check out this tutorial: How To Install Ams1gn On Ios