as a rule, the reason for "ignoring" the app is the problems with the interface. A user may not understand what to click, for instance. Try to introduce so changes to your interface, to maintain the rated value. If you do that correctly, the positive results won't be long in coming. 7th-day retention:
If the rate is much lower than the acceptable for your app category rate, analyze the usage scenario of your product. 28th-day retention.
When users return to your app in a month it testifies about there satisfaction. But if the rate is lower than average it points to the fact that there is a strategic drawback.
But remember, that the acceptable retention rates for IOS and Android differ. For instance, 1st-day retention for IOS is 44%–10% while for Android it is 41%–15%.
- Churn Rate. This metric shows the percentage of the loss of users. In this case, churn doesn't mean the users installed the app, it means that they do not open it anymore. You can calculate it this way: Churn Rate=1-Retention Rate
3. User Activity
- Uninstall Rate. And yes, this metric shows the rate of uninstallation of an app. You can count it by dividing the uninstallation number by the number of installation for a certain period of time.