Really enjoyed the various titles of the things. Cute little game .
It wasn't totally obvious to me how the buying mechanic was working. I had to go back on a second run where I felt like I could properly experiment with how that worked. Maybe another visual state for that to indicate that buying more won't further reduce the timed stress penalty would help? Unless that's an intentional part of the "puzzle" aspect.
This didn't really feel very puzzly otherwise unless I'm missing something.