What are some alternatives?
When comparing Tall Tweets for Google Slides and GifBook, you can also consider the following products
Plotaverse - Photo animation made easy, animate like the pros
Print A Gif - Turn any gif into a printable flip book
Instagfy - Make a GIF with your most popular photos on Instagram
flpbk.io - Video to flipbook converter. Free shipping.
Gifs - Search through a library of hundreds of GIFs that you can send in your messages or that you can share to social media pages.
Gif Slice - Slice up gifs into art for your walls