How do you create a long timer?

[Anke]

@Jipe

no way to screen off using appinventor

Yes, of course that's possible (all my apps run in standby / screen off for many hours), see here:

Do you plan AI will work when hidden?

If the app is closed, nothing can be done from the app, also not " for a while". There are many misconceptions about the term “background”. Background as used here means only that the app is not visible (eg after pressing the home button or after time-out / in sleep mode), but not closed. "Background tasks / services" means that an app can also execute somthing if the app is closed. That's is indeed not possible with AI2 & its clones (AB, Thunkable, Kodular, ...). So show your blocks or post …

Do you plan AI will work when hidden?

Check this simple app: testBackground.aia (12.4 KB) Build the APK (should also work with Companion). Enter the current minute + x or the current hour + x in the TextBox and test whether it also works in the background (after pressing the device home button or the power button - in sleep mode - or both). [grafik] [grafik]