Product Metrics That Matter (PMTM) is a collection of metrics that give a complete picture of a product.PMTMs can be difficult to master since a great metric for one product could be a terrible one for another.Understanding the usefulness and relevance of a metric will be determined by four variables: product, company, industry, and end users.A startup fitness product raises its annual membership cost to $1,000 for 500 active members using offline fitness centers.In determining PMTMs for this startup, PICE (Product, Industry, Company, End User) framework is applied.For the startup, its goal is to reduce subscriber churn since it’s the biggest growth problem.Metrics focused on user experience like user-focussed metrics, customer journey funnel, and average ratings are used to determine PMTMs.The PMTMs for the startup are: acquisition, activation, referrals, and churn.Focusing on PMTMs that reinforce each other and affect the one metric that matters most will significantly help in tracking and goal setting.Data can be used to see which of the input metrics has higher correlations with churn, thus narrowing focus further.