DAU/MAU
Месячный коэффициент “прилипаемости” пользователя к сервису. Процент уникальных клиентов, которые повторно воспользовались сервисом за период. Так называемый «stickiness».

Daily active users/monthly active users. It is the ratio of your daily active users over your monthly active users, expressed as a percentage. Usually apps over 20% are said to be good, and 50%+ is world class.
The Daily Active Users (DAU) to Monthly Active Users (MAU) Ratio measures the stickiness of your product - that is, how often people engage with your product. DAU is the number of unique users who engage with your product in a one day window. MAU is the number of unique users who engage with your product over a 30-day window (usually a rolling 30 days).
DAU/MAU has been a popular metric because of Facebook, which popularized the metric.

DAU/MAU is a popular metric for user engagement.

The metrics we start with are total active users (monthly/weekly/daily) it’s growth, alongside any ratios like DAU/MAU or DAU/WAU. These help us understand how frequently active people are in using the products.