This calculator is arithmetic on a table, not a live mixer. Enter quantities from your own [π½] Steal a PC session. It will not click the shop.
Upgrade payback
Upgrade payback estimate
Estimate how many income cycles it takes to cover a cash upgrade you can already see on the board. Type the price and the extra cash you expect each cycle. This form does not read your pen, and the defaults are labeled examples from November 2026 reports.
Payback cycles = upgrade cost Γ· extra profit per cycle, rounded up.
Default upgrade cost is $2,000,000, the cash price reported for treadmill Level 3 to Level 4. Default extra profit is $1,866,000 per cycle, which is the recorded $31.1K per second base rate multiplied by 60 so one cycle stands for one minute. That rate came from a developed pen, not a new account. Replace both numbers with your board price and your own extra income. If you paste a per-second rate, multiply it by 60 before entering it as extra cash per one-minute cycle.
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