Pricing
Simple, transparent pricing
The calculator stays free forever. Pro unlocks parameter tracking, drift alerts, and dosing schedules tuned to your tank.
What's included
Choose a plan
Monthly
$5/mo
Best value
Yearly
$42/yr
$3.50/mo — save 30%
Lifetime
$84once
Two years of yearly — then free forever
30-day money-back guarantee. Cancel anytime from the billing portal. Questions? Get in touch.