Hi do you know about an app on ipad or iphone that can measure screen time on iphone or ipad???

I want to measure how long i spend on my screen (ipad, iphone...) every day.... I need an app for it... There are some, but they cost something... I w

I want to measure how long i spend on my screen (ipad, iphone...) every day.... I need an app for it... There are some, but they cost something... I would like to know if the timer pauses when the ipad is locked or if it keeps on measuring... Do you know about an app like that??? Thank you

or:I want to measure how long i spend on my screen (ipad, iphone...) every day.... I need an app for it... There are some, but they cost something... I would like to know if the timer pauses when the ipad is locked or if it keeps on measuring... Do you know about an app like that??? Thank you

or:I do not think so, but you can trying to get a regular timer app for it, and getting into the habit of turning it on when ipad is on, and turning it off just before turning ipad off.

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