Lives

Lives are a main mechanic in Grow Simulator.

Lives are obtained by Rebirthing. To Rebirth you need to have a certain amount of Growth. The formula for rebirthing is:
 * $$Rebirth Cost = {(Life ~ \times ~ 1000)^{0.97}}$$

For every life you have, you get one more Growth when you click the Grow button.

When you have enough lives, you can Ultra Rebirth, which gives you an Ultra Life, which in turn, gives you one more life every time you rebirth.