This game has a lot of potential! Here is my breakdown:
*Graphics
The game looks nice, the water effects are good. The dirt texture updating felt responsive. The scuba mask around the screen is a nice touch, it would be cool if the main part of the mask had lens dirt or shines when looking at bright things to really sell the illusion. The UI was a little basic and close together, so it was hard to decipher it at first. The 3d models look good, and the fish animations are also very good.
*Audio
This game either has no audio or I experienced a bug, either way it is a game jam game so it is not that big of a deal.
*Design
The concept is very good! Powerwash simulator but underwater is an awesome idea. The underwater aspect lets you maneuver all around the object, and clean every side of it. The cleaning device rotating is an interesting way to incorporate the theme. The movement, is strange. Having most of the screen be a dead zone in theory lets you anchor your camera and focus on a specific area. This does work (even though moving the device around pushes you off the wall) although, it makes moving the camera very clunky. Like, to the point it is frustrating. Being underwater means I want to maneuver around easier not harder, because the extra dimension of movement requires more complex and precise movement to properly orient myself to clean. Maybe this movement style would work better in a game that has more traditional movement, but here I just do not see the advantage. Other games have had even more complex movement like rotation in the 3d space, that requires precision , and didn't need this camera style (like outer wilds). The ability to inflate and deflate is a nice quality of life feature, I quite like that. It would be nice if instead of pulling you up or down (which I can already do by ascending or descending), it was a binary where inflated freezes you at the current depth, and deflated does not affect movement. I think the generous win state was implemented to ease onboarding, because what if they miss a pixel of dirt somewhere, right? The thing is one of the main draws of games like powerwash simulator is taking up a task and meticulously seeing it to completion, and then admiring your work. If a pixel is missed somewhere, then I feel most people wouldn't mind hunting it down in the name of finishing. Plus, I saw you changed the dirt color to green, so it wouldn't be too hard to find. In the future you could also add a dirt scan feature, that highlights dirt for a second for situations like these.
Overall camera controls aside, I has fun and thought the cleaning was satisfying. Keep it up!