Balls

There are ten different colored balls that can be purchased and upgraded from the leftmost tab at the bottom end of the screen. As the balls increase in tier, their base values and spawn times increase.

Upgrades
Each ball has two upgrades available for purchase, Value and Time. These upgrades can be purchased in increments of one, five, or ten, by tapping the blue button on the top left corner of the Balls menu. The Value upgrade will increase a ball's value by a factor of x1.34, while the Time upgrade will multiply a ball's time by x0.96

The Value upgrade's cost increases by x1.7 with each purchase, and the Time upgrade by x1.78

Ball Value
The base ball value uses a multiplicative formula to work out the total each ball is worth:

=(Base Value)*(Current Prestige Bonus)*(Number of Badges*0.283)*(Remove Ads Ball Value Boost)*(Starter Pack Ball Value Boost)*(Epic Pack Ball Value Boost)

* Each Badge, earned during Challenges, is equal to a 20% increase in ball value.