It's fun, but a feel it can be expanded a lot more, I found first level to be the hardest because of flying plane (the one that jumps or something), took me 3/4 tries, and after that it was just jumping, I wish it was harder and had more variations than just jumping over same obstacle (they look different but are more or less the same, trash can had taller hitbox I think), maybe jumping on obstacle and from that obstacle on another and down are spikes/lava like in geometry dash, since you mentioned it was inspired by it
Overall it's fun just can be expanded more in terms of versatility in gameplay, good luck in game jam, oh and also love the artstyle