Why are all the iphone apps I have ever downloaded saved on my macbook pro?

There's 60GB of iphone apps stored on my macbook pro. It is taking up a lot of space and i was wondering if that is normal or something is wrong. Would it be alright if I deleted all of it and just backed up my phone to the cloud?

"""Would it be alright if I deleted all of it"""

Yes. Don't use iTunes on Mac to download phone apps.

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