Dain-App is described as 'Depth-aware video frame interpolation app for Nvidia GPUs' and is an app in the Video & Movies category. There are three alternatives to Dain-App for Windows, Linux, Mac, Online / Web-based and SaaS. The best alternative is SmoothVideo Project. It's not free, so if you're looking for a free alternative, you could try Flowframes or Interial.
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.
Interial is a 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.