
Establishing some useful terminology and expanding on ideas covered in Masahiro Sakurai's video explanation of this topic, Frame Sense Trainer is a game with exercises, tutorials, examples, and tools useful to honing what this software will refer to as “Frame Sense”, or rather, “Temporal Frame Estimation” (TFE) if technical terms are preferred.
Tools for frame duration visualization
Tutorials for learning to hone TFE
A ranked leader board for exercises of various difficulty
I did! I couldn't find software for doing this so I decided to make it myself.