To calculate the retention rate for a mobile game, you will need to gather data on the number of players who install the game and the number of those players who continue to play the game over a specific period of time.

For example, let’s say you want to calculate the day-1 retention rate for your mobile game. To do this, you would need to track the number of players who install the game on a given day (let’s call this the “install base”) and the number of those players who are still playing the game the next day (let’s call this the “retained base”). The retention rate can then be calculated by dividing the retained base by the install base and multiplying by 100%.

Here’s the formula for calculating the day-1 retention rate:

Retention rate = (Retained base / Install base) x 100%

So, if your install base on day 1 is 1000 players and your retained base on day 2 is 500 players, your day-1 retention rate would be 50%.

It’s important to note that retention rates can be calculated for different periods of time, not just day 1. For example, you could calculate the week-1 retention rate by tracking the number of players who are still playing the game one week after installation, or the month-1 retention rate by tracking the number of players who are still playing the game one month after installation.

Overall, tracking retention rates can provide valuable insights into how well a mobile game is retaining players over time, and can help developers identify areas for improvement in order to drive greater success for their game.