Invaluable!
I've been using this app for... perhaps a decade(?). I don't have the latest version as I'm using it on a 2013 iPad mini. And kudos to the developer for allowing the app to continue to work on such an old device! It glitches every now and then and locks up. But I suspect that would not be the case on an up-to-date device. I mostly use it to shoot my YouTube videos. i put the iPad mini just above the lens and it looks like I'm using a regular prompter. Terrific app. Highly recommentded!