You do not need to download any third-party app for ios device screen record, because iOS 11 built-in Screen Recorder with voice sound is a big advantage of iOS 11. How to use Screen Recording in iOS 11 on idevice read this thread
You do not need to download any third-party app for ios device screen record, because iOS 11 built-in Screen Recorder with voice sound is a big advantage of iOS 11. How to use Screen Recording in iOS 11 on idevice read this thread