I recommend to many of my clients to invest in the $99 teleprompter from www.parrotteleprompter.com
I had originally seen this product on kickstarter and have been following it over the years. I decided to finally invest last year and it's been a game changer. For those who spend a long time doing multiple takes and memorizing lines, this is the perfect solution.
It comes with over 10 different circle attachments for different size lenses.
It also has a free app you can download.
Hope you guys enjoy!