Not that good – Video Speed Editor - Slow and Fast motion effects for multiple parts of your videos Review
I was not very impressed with how it turned out. It's like all the other apps I've tried. I don't like how it slows down the speed of the music too. And I also don't like how you have to go pro to use x4 and x8 speed. Sorry but I don't really like this app too much.
Review by MiyahTheGreat on
Video Speed Editor - Slow and Fast motion effects for multiple parts of your videos.