Average Revenue Per User (ARPU) is a key metric used by companies to measure how much revenue they are generating per user. Companies use ARPU to track their progress in monetizing their user base and to compare themselves to competitors. ARPU is a good metric to track because it shows you how much revenue your company is bringing in per user. This number can be useful for benchmarking against competitors and for evaluating your company's progress in monetizing its user base.