Some other key metrics to consider in addition to ARPU include Monthly Recurring Revenue (MRR), customer acquisition cost (CAC), and customer lifetime value (LTV). MRR is a measure of the total revenue your customers generate each month, CAC is the fee associated with bringing on new customers, and LTV is the amount of money that a single customer will spend over their entire time using your product. Together, these metrics help you assess the financial health of your business and make more informed decisions about pricing plans, marketing strategies, and product offerings.