Integrate with Enhance - App Inventor
Local Notifications
Local Notifications are reminders which show up on your screen after the app becomes inactive for a specific amount of time.
Example Usage

Methods
EnableLocalNotification
void EnableLocalNotification(
text title,
text message,
number delaySeconds
)
Schedule a new local notification, if possible. The notification will persist until you disable it manually. For example, if you set a notification for 60 seconds, it will invoke this notification 60 seconds after the app is closed, every time.
Parameters:
text title
- Title (header) of the notification.
text message
- Message (body) of the notification.
number delaySeconds
- Delay of the notification (how long to wait after app becomes inactive). Use seconds.
DisableLocalNotification
void DisableLocalNotification()
Schedule a new local notification, if possible. The notification will persist until you disable it manually. For example, if you set a notification for 60 seconds, it will invoke this notification 60 seconds after the app is closed, every time.