Require suggestions of blocks to set functionality of app for a given period of time

Hello everyone:
I would appreciate it very much if someone could give me a hand in a project. I want to create an app that will be functional just for limited period of time (for example from march 2, 2024 until december 31, 2024). After that date the app will no longer work. I need a sample of the components needed as well as the blocks to do it. Thank you very much in advance.

Something like this:

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This is a simple solution and most probably works for your purposes. . However a user could manually change the datetime of the device to hack this... for a more secure solution you have to check datetime online...

Taifun

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