What are KPIs for an app?
Mobile app KPIs (key performance indicators) measure a mobile app's success over time, starting from its development, marketing, and on to the revenue generated from the final product.
How to measure performance of mobile app?
To calculate the retention rate, divide the number of monthly active users by the number of app installations. This will give you an aggregated retention rate. Let's say you have 600 MAUs, and 1000 users installed your app. The aggregated retention rate is 60%.