This calculator is arithmetic on a table, not a live mixer. Enter quantities from your own Steal A Fish session. It will not click the shop.
Upgrade payback
Fish payback estimator
Estimate how many minutes a flat-income fish needs to cover its cash price. Enter the river price, convert its cash per second into cash per minute, and leave the cycle at 1 minute. This is arithmetic on the numbers you type, not a live readout of your base.
Payback cycles = upgrade cost ÷ extra profit per cycle, rounded up.
Demo defaults use the listed Turtle price of 350 cash and 17.50 cash per second. Multiply cash per second by 60 and enter that as cash gained per minute, then keep the cycle at 1 minute. The estimate is price divided by that minute rate. It ignores theft, mutations, percent fish, rebirth multipliers, and the offline cap.
