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Some apps like Whatsapp, Twitter and Instagram end up storing a lot of Documents and Data, way more than their actual size.

I want the exact opposite of this: How can I delete an iOS app and preserve its data?

Is there a way to remove just the Documents and Data and leave the app installed?

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Actually, most of that data is cached from the internet for the specific apps you mention. Twitter and Instagram cache images, tweets, posts, etc. from the Internet. There is currently no easy way to remove them, however, you can send feedback to Apple here, and tell them you want a way to delete app cache.

You can restore from iTunes to remove it, as it's not backed up. If you run out of space on your device, iOS will automatically remove the cache.

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  • Why do I have to send feedback to Apple for this feature? Isn't it supposed to be inbuilt? And I often hit the wall with no space on my phone, but I never see cache of the Apps being deleted, it's just increasing.
    – Swapnil Rastogi
    Commented Sep 27, 2015 at 3:51
  • @SwapnilRastogi Ideally, if you have a more formal relationship with Apple due to purchasing a lot of equipment or a developer agreement where they solicit feedback from developers or attend a professional conference with Apple employees that might have some influence on features.
    – bmike ♦
    Commented Jul 14, 2018 at 14:16

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