Timer doesn't run when phone screen is off

[Taifun]

Try the itoo extension

ItoO - Background Tasks [special]

[image] ItoO Tasks is a specially built extension (completely different from the old one) that makes such Environment that it would be possible to allow things like Procedures/Variables to be accessed when the App is In Background. Blocks Here are some of the blocks, blocks that arent mentioned are intended for Test only purpose. Initialize [image] Initializes the service that would run after @latency. Name is the (main) procedure name that will be called. Of “runWhileActive”, if set t…

or depending on your requirements the alarmmanager extension

App Inventor Extensions: Alarm Manager | Pura Vida Apps

Taifun