Periodically the space on my laptop gets lower than I like. So, yesterday I decided to get rid of the numerous apps that I have stored in my iTunes app. I was able to recover over 10 GB of much needed space.
Did you know that you do not need to keep copies of your iphone/ipad apps in iTunes, as you can re-download purchased content from the iTunes or App
stores anyway.
However, there may be a reason to keep some in your iTunes library. If the
developer pulls a particular version of an app and replaces it with
another version, the only version available for re-download will be the
current one, regardless of which version you originally purchased or
want on your device.
So
for any older devices you still have, i.e. an iPad 1, this may be the case for keeping an old app. An iPad 1
cannot be updated beyond iOS 5.1.1 and many apps in the stores have been
updated and now require iOS 5, 6 or 7. In that situation, an iPad 1's
owner may have only their own saved copies of compatible apps for
re-installation if necessary.
So there are a few circumstances where you may want to keep some app's installers saved locally for yourself.
