Personally, I chose RIFE-App because:
- When I used Flowframes a few months ago to interpolate high resolution video (4k to 8k, especially VR), it required a MASSIVE amount of disk space (not RAM or VRAM, hard disk). Like hundreds of gigabytes. RIFE-App doesn't have this problem.
- RIFE-App's profits are shared with the creator of the RIFE algorithm.