“our sort of like a umbrella metric for all those monetization experiments was the average revenue per user in the first seven days So this kind of RPU 7D”

Use ARPU-7D as your monetization north star

Mojo chose 7-day ARPU as their single unifying experiment metric because it covers the full 3-day trial window and directly feeds the unit economics needed to scale paid acquisition. Optimizing for trial conversion alone can miss revenue quality signals; ARPU-7D captures plan mix, price, and conversion simultaneously. It also shortened the feedback loop so each experiment cycle concluded in 1-2 weeks per geo segment.