Great concept, and good execution.
I enjoyed the puzzle aspect, figuring out how the flow will go. I often found myself putting down random numbers and then adjusting over time, which I assume is the intended flow? In that, I really appreciated that the times on platforms were remembered into the next planning phase so I didn't have to memorise them!
I would have liked to have a bit more control over the number (i.e. finer than 0.5 increments, as I'd sometimes have a really tight jump that I'd want to make just a little bit easier by delaying it another 0.1 or 0.2 seconds.
Also, it would've been nice to know what target to shoot for in order to get the one/two/three stars; at the moment you're just sort of doing your best and hoping it's good enough.
(I also enjoyed that the 0.0 made it look like the platforms had little faces.)