The 6 numbers a commercial gym lives or dies by
Most commercial gyms track the wrong numbers. Total member count and total monthly revenue look reassuring on a dashboard but lag reality by 30–60 days. The numbers that actually predict whether next quarter is good or bad are these:
1) Net new members per week vs the same week last year. Tells you if marketing is actually working.
2) Failed-payment recovery rate. A gym recovering 30% of failed cards is bleeding money. A gym recovering 65%+ has plugged the biggest revenue leak.
3) 7-day visit attrition (members who came 4+ times last month and zero this week). Future churn lives here.
4) PT-revenue-per-trainer-hour. Tells you whether your PT bench is actually profitable or just expensive.
5) Cost per acquisition by channel, with payback period. Most marketing spend is going somewhere wrong.
6) Net revenue retention (current cohort revenue ÷ cohort revenue 12 months ago). Above 100% means you are growing without new sign-ups. Below 90% means you are leaking.
GymViz puts all six on the homepage of the owner dashboard. They are the first thing you see when you log in.