Really fun game! The stun from jumping didn't feel out of place, but it did also get a little bit annoying if I jumped and landed on the same elevation. It feels like it would've been better if you feel to any platform lower than your starting elevation rather than on every jump. I also found myself getting stuck behind small ledges when I wanted to jump to a slightly elevated platform sometimes too (guessing because it was trying to bounce me off the wall but couldn't because I just immediately hit the floor again?) Also, the dead frog souls were a nice, subtle touch to highlight death (reminds me of how red goo splatters everywhere when you die in super meat boy, gives your death a feeling of permanence, like it actually matters more).
The level design was good and it was really satisfying to watch the frog get stunned and hurt himself with all the screenshake and whatnot. It really felt like he was hitting the walls and ground hard, which was strangely satisfying (does that make me a bad person? lol.) There were some areas where it felt like I needed to do really precise platforming. This isn't a bad thing, but I got stuck on the last jump of the final part right before the final free fall for probably 2-3 minutes. I got a bit impatient and was bordering on quitting when I finally got it by narrowly missing a wall spike.
That being said, most of these things are just minor nitpicks. Overall, this was a genuinely fun game. I really enjoyed it a lot and if you continue development, I think you'd have a really good game on your hands.