Screener alerts on the Trendlyne App allow you to set notifications for the screeners you track. You can set alerts for different time intervals like 15 minutes, 30 minutes, hourly, and daily. These alerts provide updates on stocks that enter or exit the screeners you have added to your watchlist. 

To access this feature, open the Trendlyne app and go to the 'Alerts' section. Find the ‘Screener’ tab on the top, as shown below. Scroll down to explore all the screeners available.