New in version 5: Autostart property added.
You now can choose if you want the extension to show a notification or autostart the app at the given time.
New blocks
To use the autostart feature, the user needs to grant "Appear On Top" permission. See the new methods HasAppearOnTopPermission and OpenAppearOnTopSettings . So while the user is using another app, at the given time your app will get priority and will appear on top of the other currently running app.
This is what Google is saying: Android 10 (API level 29) and higher place restrictions on when apps can start activities when the app is running in the background. These restrictions help minimize interruptions for the user and keep the user more in control of what's shown on their screen. In nearly all cases, apps that are in the background should display time-sensitive notifications to provide urgent information to the user instead of directly starting an activity.
For security reasons it is not possible to bring the app to the front in case the screen is locked. You first will have to unlock the screen.
For details, see my webpage here App Inventor Extensions: Alarm Manager | Pura Vida Apps
Theoretically this extension now also works in Kodular, however unfortunately they introduced a new bug, see also this Kodular error report...
Taifun