I got farther than I'd like to admit before realizing that the scale drop count does not, in fact, make each drop produce 6 balls. You should probably fix the description for those upgrades. Great game, though! I have to say I disagree with the complaint of everything being taken away when you enter a new stage, you still keep your money, so you can buy back a lot of the upgrades that were taken away from you, plus the clean slate feeling is nice.
It multiplies each ball by the x amount! I apologize for forgetting to write the tooltip. In the below comment I talked about the plans for these upgrades, but they need a lot more design still. Thank you for playing to that point and getting as far as you did!
Also I really appreciate the positive feedback. I agree -- I know this game won't be for everyone, but we've tried a bunch of different things now, and this system with the tiered stages does feel like the best way forward for this particular game.
And I need that clean slate feeling too. We added the "hold to click" so that re-buying things wouldn't be so painful. And added the keeping money, that helped a lot XD