You ever start watching a handful of Kamen Rider or Super Sentai and forget where you were because it might be months between newly-available episodes?
Try this! I’ve compiled a list of each series, with amount of episodes, movies, and the like. You can easily checkmark what you have or haven’t seen. Currently, it goes to the end of Kamen Rider Drive and features an impossible amount of Shuriken Sentai Ninninger episodes, but it’s a good start, especially if you’re watching old episodes.
(NOTE: The list is very beta. I will upload new versions intermittently.)