Users expect apps to load fast and be responsive. An app with a slow start time doesn't meet this expectation and can disappoint users. This sort of poor experience can cause a user to rate your app poorly on the Play store or even abandon your app altogether.
Android vitals
Android vitals can help improve your app's performance by alerting you on the Play Console when your app's startup times are excessive.
Android vitals considers the following startup times for your app excessive:
- Cold startup takes 5 seconds or longer.
- Warm startup takes 2 seconds or longer.
- Hot startup takes 1.5 seconds or longer.
Android vitals uses the time to initial display (TTID) metric. TTID is the time it takes to display the first frame of the app's UI, including process initialization during a cold start, activity creation during a cold or warm start, and displaying the first frame.
For information about how Google Play collects Android vitals data, see the Play Console documentation.