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Editorial Team
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Asked: 2026-06-04T11:16:46+00:00

Apple rejected this app, and even provided a long explanation in the Resolution Center,

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Apple rejected this app, and even provided a long explanation in the Resolution Center, but I am not certain why. Could someone help me translate?

2.23

We found that your app does not follow the iOS Data Storage
Guidelines, which is required per the App Store Review Guidelines.

In particular, we found that on launch and/or content download, your
app stores downloaded media (MP3 files). To check how much data your
app is storing:

  • Install and launch your app
  • Go to Settings > iCloud > Storage & Backup > Manage Storage
  • If necessary, tap “Show all apps”
  • Check your app’s storage

The iOS Data Storage Guidelines indicate that only content that the
user creates using your app, e.g., documents, new files, edits, etc.,
may be stored in the /Documents directory – and backed up by iCloud.

Temporary files used by your app should only be stored in the /tmp
directory; please remember to delete the files stored in this location
when the user exits the app.

Data that can be recreated but must persist for proper functioning of
your app – or because customers expect it to be available for offline
use – should be marked with the “do not back up” attribute. For NSURL
objects, add the NSURLIsExcludedFromBackupKey attribute to prevent the
corresponding file from being backed up. For CFURLRef objects, use the
corresponding kCFURLIsExcludedFromBackupKey attribute.

For more information, please see Technical Q&A 1719: How do I prevent
files from being backed up to iCloud and iTunes?.

It is necessary to revise your app to meet the requirements of the iOS
Data Storage Guidelines. For discrete code-level questions, you may
wish to consult with Apple Developer Technical Support. Please be sure
to:

  • include the complete details of your rejection issues
  • prepare any symbolicated crash logs, screenshots, and steps to reproduce the issues for when the DTS engineer follows up.

For information on how to symbolicate and read a crash log, please see
Tech Note TN2151 Understanding and Analyzing iPhone OS Application
Crash Reports.

If you have difficulty reproducing this issue, please try testing the
workflow as described in
https://developer.apple.com/library/ios/qa/qa1764/Testing Workflow
with Xcode’s Archive feature”.

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1 Answer

  1. Editorial Team

    The iOS Data Storage Guidelines indicate that only content that the user creates using your app, e.g., documents, new files, edits, etc., may be stored in the /Documents directory – and backed up by iCloud.

    Temporary files used by your app should only be stored in the /tmp directory; please remember to delete the files stored in this location when the user exits the app.

    Data that can be recreated but must persist for proper functioning of your app – or because customers expect it to be available for offline use – should be marked with the "do not back up" attribute. For NSURL objects, add the NSURLIsExcludedFromBackupKey attribute to prevent the corresponding file from being backed up. For CFURLRef objects, use the corresponding kCFURLIsExcludedFromBackupKey attribute.

    That right there tells you exactly what they think the problem is. Apparently, you’re storing data that isn’t created by the user themselves in a location that iCloud backs up, without telling iCloud to not back it up. (iCloud is only supposed to back up user-created data.)

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