Finding docoment & data on my iphone

Hello, hosseinmas!

[The files and data] are not visible in the app

The app is empty

This is most likely because although you don’t have any existing files in the app that you’ve created, the app itself may have some music, effects, filters, and other things downloaded onto it. The storage that the app itself takes up is just what you see and what the buttons do. Whatever information is called by a button you press or a page you go to is probably downloaded onto your device.

If you are still having trouble with the app or this does not fully explain your question, contact the developers of this app.

I hope this helps!

Those the files and data contained inside the App in question.

Look inside the Video Joiner App for files and videos you can delete.

There must be something there, though the App may not offer a way to see and delete that data. Your best bet is to delete the App and install it again. This generally removes any stored data that cannot be deleted any other way.