This calculator is arithmetic on a table, not a live mixer. Enter quantities from your own [V3] Feed A Mosquito session. It will not click the shop.
Upgrade payback
Upgrade payback
Estimate how long extra cash per minute takes to cover a shop price you enter. Weapons that only unlock harder bosses do not have a cash-per-minute figure unless your income actually changed after the fight.
Payback cycles = upgrade cost ÷ extra profit per cycle, rounded up.
The 15,000 default is one observed mid-chain seat price, not every seat. The 600 default is a demo of 10 extra cash per second times 60, not a mosquito's rate. Replace both. If you know extra cash per second, multiply by 60 and keep the cycle at 1 minute.
![[V3] Feed A Mosquito Calculator](/media/optimized/289e8d48c52afce57da66d66-768.webp)