Just had a playthrough and this was great!
I personally really liked the whole minimal esque art style the game had, alongside the few details like the movement trails and such.
The mechanics were also pretty well done, and gave a lot of room for really cool puzzles, really did wish there were more levels lol.
One small suggestion I might have would be to possibly have some sort of indication of which way the pair is rotated, as sometimes while the pair were both colliding against something it would be a bit hard to tell which way they were supposed to be oriented.
Overall it was a great game and you should look into developing the project further and add more levels and such.