You didn't hear any sound effects?
I just checked the game out again and indeed it has a sounds effect when you click, but I think it was too quiet compared to the popping sounds, and it was just not a good satisfying sound overall, considering that's what you spend your time doing in the game :)
On the other hand, I was quite surprised to see that the game saved my progress from the last session, instead of wiping all the data when you close the game? That's really good design and I can see people coming back to the game to play it a lot of times, so good job on that :D