Deleting the app isn’t the change. What you do with the free hour is.

Removing something creates a vacancy, and vacancies fill themselves if you do not fill them. Most people delete the app, feel virtuous for two days, and then discover the same hour going to a different version of the same thing. Subtraction on its own is unstable. The hour has to be spent on something you actually want or it goes back where it came from.

Decide what the hour is for before you delete anything. Put the replacement somewhere physical, the book on the pillow or the shoes by the door. Check after a week whether the hour went where you sent it.