Because "paper" can refer to an academic document or a written guide, I have provided a Practical Installation Guide below, along with an explanation of the Technical Mechanism (how it works behind the scenes) for reference.
One of the main reasons people wanted Display Recorder was to record internal audio (game sounds, music app output). Apple’s security prevents any third-party app from capturing internal audio without using the ReplayKit framework. Even if you sideload an old Display Recorder IPA, it will not bypass this sandbox restriction. display recorder ipa install
Installing a Display Recorder IPA is possible through several side-loading or jailbreak-based methods, but no method is as seamless or safe as the official App Store. For most users, AltStore / Sideloadly with a free Apple ID offers the best balance of accessibility and safety, despite the 7-day renewal requirement. Jailbreaking should only be considered on dedicated test devices with no sensitive data. Because "paper" can refer to an academic document
The Challenge: iOS enforces code signing. You cannot simply drag and drop an IPA onto a device unless it is signed with a certificate trusted by the device. Open the app → it may crash on modern iOS if not updated