Neat puzzle game, and I love the simple aesthetics. My only complaint would be that the jumping motion happens too fast to be able to pause at the right time. Also, an option bind pause to something else would be nice, since my brain is used to pressing space for jump.
Also, I don't know if this was intentional, but some of the puzzles can be solved by jumping out of the bounds and back in, like on level 6. Maybe that's an alternate solution but it feels pretty cheesy.
Edit: To clarify, it seems based on the sc that lvl 6 is meant to be completed by dropping one character down the platform and pausing, and using that char as a platform for the other. However, I solved it by slipping out of bounds to travel down a platform with both characters. I think other levels can be cheesed this way too.
I don't mean to sound too harsh, I really like this game.