Active Users are individuals who have interacted with an application or platform within a specific time frame, such as daily active users (DAU), weekly active users (WAU), or monthly active users (MAU).

Adoption Rate is a key indicator of how well a new product, feature, or update is being received by users. It can provide insights into the product's value and usability.

Average Revenue Per User (ARPU) is a company's generated revenue that is averaged over all users or customers.

Churn Rate is a business metric that calculates the number of customers who leave a product over a given period of time, divided by the remaining number of customers.

Cohort Retention is a measure of how many customers from a specific cohort, or group, continue to use a product or service over time.

Conversion Rate is a key indicator of how effectively a business is able to persuade users to take the desired action. It's a reflection of the effectiveness of your marketing and sales efforts and can directly impact your revenue.