Billing is fully automatic and usage-based via Shopify. Here’s how it works:
Every billing cycle starts at the Free tier.
As quiz completions accumulate during the cycle, the system automatically upgrades to the next paid tier when usage exceeds the current plan's completion limit.
A usage charge is created via Shopify for the difference between your current tier and the new one.
Merchants do not manually select or change plans — pricing is entirely usage-driven.
All charges appear on your regular Shopify bill — no separate payment method needed.
There is no ongoing charge unless quiz completions exceed the free limit.