This calculator is arithmetic on a table, not a live mixer. Enter quantities from your own School Tycoon 🏫 session. It will not click the shop.
Upgrade payback
Upgrade payback
Estimate how many homework laps a pad needs before it earns back its price. You type the coin price and the extra coins you measured. The form does not know your plot, your stampers, or a hidden drop rate.
Payback cycles = upgrade cost ÷ extra profit per cycle, rounded up.
The starting numbers are blanks for the form, not School Tycoon drop rates. Read the pad price in your own school, run a few laps before and after the purchase, and type the difference you see. A cosmetic pad should be entered as about zero extra coins.