I really like how you've essentially made a platformer that forces your attention to be constantly split. It feels good to have to be cognizant of your landings, while in most platformers you only care about your takeoff, and then you often just focus on your next jump before you even land. I personally played the levels in a way that I could react to the movements of the line before landing, mostly by saving double jump. I also enjoyed your cute art style!
A bit of a tangent:
Your game is unique enough that it would also be easy to make second game mode that has more of a "gambling" feeling by making 3 changes: Make the line react instantaneously/lag behind or maybe even hide itself right before you land, remove the hints from the level and make it so your bailouts reset back to full each level, but if you ever lose them all you start from level 1. Then at first it feels like a casino game, but it gradually and naturally turns into a memory game. It might evoke feelings of playing in a casino, where at first you are losing, but then you end up "cheating" by counting and remembering cards (read: platforms) ;).