What are some alternatives?
When comparing Instagfy and GifBook, you can also consider the following products
Tall Tweets for Google Slides - Tweet your Google Slides as animated GIF images
Print A Gif - Turn any gif into a printable flip book
Plotaverse - Photo animation made easy, animate like the pros
flpbk.io - Video to flipbook converter. Free shipping.
GIPHY GIF maker - Create animated GIFs from videos (by Giphy)
Gif Slice - Slice up gifs into art for your walls