Plenty of vloggers and public speakers use teleprompters to present smoothly and confidently on camera. The Padcaster Parrot is a handy kit that turns your iPhone into a portable teleprompter. It can be mounted to any camera by attaching directly to the lens filter thread.
The Padcaster Parrot app is compatible with iOS and Android devices. It has a Bluetooth remote to pause, play, and adjust the speed of your presentation.[where to get it]