This calculator is arithmetic on a table, not a live mixer. Enter quantities from your own Clone to Steal Eggs session. It will not click the shop.
Upgrade payback
Upgrade payback timer
Estimate how many cycles it takes for a Cash upgrade to earn its displayed price back. You supply the button price and the extra income you expect.
Payback cycles = upgrade cost ÷ extra profit per cycle, rounded up.
Type the Cash price shown on the upgrade button and your own estimate of the extra Cash that purchase adds during each cycle. The timer does not read your account, rebirth multiplier, or the live shop. Rebirth removes only its listed Cash price, so leftover Cash is not part of this estimate. If clones are failing a speed gate, a treadmill can be worth buying even when the payback looks slow.
