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Why do Mac Appstore updates change file size when downloading?

I was updating iMovie to the current version 10.0.3


When it was downloading, it went
from: "downloading 100 MB of 200+ MB"
to: "downloading 300+ MB of 1.97 GB"


Why does it do that? The same thing happens when I'm downloading iPhoto, Keynote, Pages & other Apple apps.

MacBook Air, OS X Mavericks (10.9.2)

Posted on Apr 10, 2014 4:44 PM

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Question marked as Best reply

Posted on Apr 10, 2014 5:06 PM

If you go to iMovie at the App Store, look at the box on the right that says: Information


The file size is; 1.97GB's.


User uploaded file


100MB of .... that's the status of the download.


It's nothing to be concerned about.

1 reply

Why do Mac Appstore updates change file size when downloading?

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