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There is no single iPhone setting that clears every app’s cache. Safari has dedicated controls for website data, while other apps may offer their own cleanup options. In iPhone Storage, you can review app storage and choose to offload an app or delete it—but those choices preserve different things.

First, know what “app cache” means on iPhone

Safari website data, temporary files managed by iOS, and an app’s documents and data are not the same. Apple provides specific Safari controls, but it does not document a universal button for clearing the cache of every app.

The storage figure shown for an app is not a precise cache measurement: Apple notes that cached and temporary data might not count toward the displayed usage. iOS also removes cached and temporary files when it needs to free space.

Free tools Windows power users keep installed

One-click scans. No signup required.

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Clear Safari history and website data

Use this option if you want to clear Safari browsing history along with website data such as cookies and cache:

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  1. Open Settings > Apps > Safari.
  2. Tap Clear History and Website Data.
  3. Choose the timeframe, then tap Clear History to confirm.

Apple says this does not change AutoFill information. Clearing Safari data can remove cookies and permissions granted to websites. It does not clear browsing histories held independently by websites or histories in other apps. See Apple’s instructions for deleting Safari history, cache, and cookies and the iPhone User Guide to Safari.

If the control is gray, Apple says there may be no data to clear, or Screen Time web-content restrictions may be involved. Check those restrictions if applicable.

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Clear Safari cookies and cache but keep history

If you want to retain browsing history while removing website data, use Safari’s separate Website Data control:

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  1. Open Settings > Apps > Safari > Advanced > Website Data.
  2. Tap Remove All Website Data, then tap Remove Now.

Removing website data can affect saved sign-in convenience because websites may use it to remember login information. Apple describes website data as information that can also be used for tracking. The same Apple support article covers this option.

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Check storage and cleanup options for another app

For apps other than Safari, start by checking the app’s own settings. Look for controls labeled cache, downloads, offline content, or storage; what is available depends on the app. Removing downloaded or offline files may reclaim space without removing other app data.

  1. Open Settings > General > iPhone Storage.
  2. Select the app you want to review.
  3. Check its storage details and, if available, open the app to find controls for removing selected documents, downloads, or data.

Apple says some apps let you delete some documents and data, but the options vary. The storage display may not include cached and temporary files, so it cannot tell you exactly how much cache an app has. See Apple’s guide to checking iPhone and iPad storage.

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Offload or delete an app: choose by what you need to keep

Choice What it removes What it keeps
Safari: Clear History and Website Data Selected Safari history and website data AutoFill information, according to Apple
Safari: Remove All Website Data Website data, including cookies and cache Safari browsing history
Offload App The app itself The app’s documents and data
Delete App The app and its related data Nothing from the removed app is promised to remain on the device

To offload or delete an app, open Settings > General > iPhone Storage, select the app, and choose the relevant option. Offloading is the less destructive choice when you want to keep the app’s documents and data. Deleting removes the app and related data; before using it, make sure important local content is backed up or otherwise recoverable. Apple explains these options in its iPhone and iPad storage guide.

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When clearing data is not the right fix

Clearing cache does not guarantee a particular amount of free space or that a slow app will become faster. Apple says to maintain at least 1 GB of free space to avoid slowdowns; that is a support recommendation, not a guarantee that reaching the figure will resolve a particular problem. iOS also manages cached and temporary files to free space. See Apple’s guidance for an iPhone or iPad running slowly.

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Blocking all cookies is a broader privacy choice, not routine cache cleanup. Apple says it removes existing cookies and website data, and may disrupt sign-ins or some website features. Use that setting only if you intend those effects; details are in Apple’s Safari data guidance.

If a particular app remains full or behaves unexpectedly, use its own storage controls first. If you consider deleting it, verify that anything important is synced or backed up before proceeding.

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.