Interial is described as 'cloud-based tool that utilizes cutting-edge Artificial Intelligence technology to enhance videos quality by multiplying their frame rate which will result in better and smoother video playback' and is an app in the Video & Movies category. There are three alternatives to Interial for Windows, Linux and Mac. The best alternative is SmoothVideo Project. It's not free, so if you're looking for a free alternative, you could try Flowframes or Dain-App.
SVP allows you to watch any video on your PC file with frame interpolation (like you can watch it on high-end TVs and projectors). It increases frame rate by generating intermediate animation frames between existing ones to produce very smooth, fluid and clear motion.