This was so much fun! It's packed with dozens of ideas and no two levels are the same... A wonderful mix of puzzles, exploration, and dexterity. And the difficulty curve was just perfect. Every level was really satisfying to solve, perhaps the only outlier being the pinball one, which was tough to figure out the physics. There were some exciting close calls, and the shape changing was particularly fun. Amazing work!
For your data, I played all levels via Firefox on a Samsung A23 wthethe Audio disabled. The only two suggestions that came to mind were a) having Oozy turn visible again when reaching the end of a level (to play the success animation) so it's clear the goal was reached, and b) the Controls were a little too low, and I had to hold the phone quite awkwardly to align my thumbs with them - if they could raise a little that would help.