Does humm cap its late fees?

For purchases less than or equal to $65, humm’s late fees are capped at $6.

For purchases greater than $65:

for Little Things purchases humm’s late fees are capped at 18% of the purchase or up to $48, whichever is lower; and

for Big Things purchases humm’s late fees are capped at 18% of the purchase or up to $78, whichever is lower.