How to determine the data for each application on iOS

Question

I recently found an app in the app store called Dataman Pro . It has a function that allows you to see the data usage for each application (see the attached screenshot ). I was wondering what he was doing to get such information.

Answer 1

See this post for a list of installed applications and this git project .

Then about usage tracking:

If you are wondering about any public APIs that give you network statistics out of the box, there is nothing there.

DataMan it self - , . , 100% , , . , Apple AppStore ...

, , , : "", , "", , . , , , Apple .

Edit:

-, , Apple AppStore - . , 10 , , , 10 .

, C, CFNetwork, stackoverflow .

:

, , , - API, plist, . , , . Apple , "private" , , iOS, , . , , ( iOS <= 3.3) db, , iOS4 , .

"private" , , , . , , , ... . , .

,. , - Apple , - API, - , AppStore . ... , , , , , , 9,99 $ . .