For example, if I have an app that is 6 MB, and I see an update on the Google Play store, which is 4 MB, will the size of the app on my phone become 10 MB (the initial + the update), or it will become 4 MB (the update will be a newer version of the app that will replace the old one)? If the first scenario occurs, wouldn't that fill up my smartphone's storage really fast? It seems that the Google Play apps release updates almost every 2-3 days. I now that I can update them whenever I want, but still... I am just curious. Thank you.