Hi there, this was a fun game to play up till Stage 6, as the bubbles are rather sensitive to twitchy fingers, which is both good and bad as it gives instant feedback, but reacts a little too fast at most times, such as when hitting a solid obstacle, and when spawning the next bubble right after destroying the previous bubble.
I get that the game was forcing me to relax when a bubble bursts, but restricting the movement of the new bubbles for a short period after they spawn would be of great help, and would further emphasise the idea that this is meant to be a relaxing game, not a race against time :p