I’ve noticed my iPhone apps are slowing down and some are using too much storage. I think clearing the cache might help, but I’m not sure how to do this. Can someone guide me on clearing app cache on an iPhone?
Oh, clearing cache on iPhones? Buckle up, because Apple decided to make this process as obscure as possible. Unlike Android, where you just hit a button and BAM—cache gone, iOS wants to play hard-to-get.
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For Safari (if it’s the culprit):
Go to Settings > Safari > Clear History and Website Data. Easy, right? But oh wait, that’s just Safari. -
For individual apps:
Here’s the catch—YOU CAN’T. Well, not directly anyway. Some apps might have a “Clear Cache” button tucked away in their settings (if the app devs cared enough to include it), but Apple doesn’t let you standardize this for all apps. Yay for inconvenience. -
Delete & Reinstall:
This is basically Apple’s way of saying ‘you want your cache cleared? Delete the entire app, pal!’ Long-press the app, delete it, and then redownload it from the App Store. Sounds prehistoric, but it works. -
Check storage hogs:
Go to Settings > General > iPhone Storage. Apps will show how much space they’re taking up, and some might even offer an option called ‘Offload App.’ This keeps the app’s data but ditches the app itself. Is it clearing cache? Not really, but it’s close enough. -
Third-party apps? LOL, no dice.
Apple is so protective about its ecosystem that third-party cleaners for iPhone cache are basically a dream.
Moral of the story: Apple doesn’t want you managing your own storage like some peasant. You’ve gotta jump through hoops or accept that clearing cache is more myth than function on iPhones. 
Clearing cache on iPhone? Oh boy, grab your popcorn because it’s a bit of a wild ride. First off, @shizuka nailed one important thing—Apple really doesn’t make this easy. But let me add a few additional tidbits (because who doesn’t love redundancy).
Force quitting apps isn’t a cache solution:
A lot of people swear by force quitting the app, thinking it works like clearing cache. Hate to break it to you, but that does pretty much nothing other than potentially irritating the app’s performance if you keep force-quitting unnecessarily. It’s not a cache sweeper, trust me.
Reset All Settings (not for the faint of heart):
If you’re truly desperate (i.e., your apps are crawling at snail speed or hogging every byte of storage), you could try going to Settings > General > Reset > Reset All Settings. This won’t delete your data, but it’ll nuke little customizations which might partially clear system cache tied to app behaviors. Risky? Yeah, kinda. Effective? Meh, sometimes.
Some apps are just cache gluttons—live with it or don’t:
Instagram, Facebook, TikTok… we all know these apps are the real corporate villains behind storage issues. If you have them, expect bloat, cache, and all sorts of hidden storage grief. These apps don’t all have cache-clear buttons buried in their settings, so deleting/reinstalling them might be your only dalliance with a clean slate. And yet, one update later, boom—cache is back. It’s a revolving door.
Background App Refresh:
You could also disable Background App Refresh for apps you seldom use to perhaps limit future cache buildup. Settings > General > Background App Refresh. It’s not clearing cache, but it might reduce app “auto-maintenance.”
But do you really need to clear it?
Actual question. iPhones manage storage in ways most of us plebs don’t understand, and iOS is (allegedly) designed to automatically allocate resources and clear some cache when needed. If things are really slowing down, the issue might be more about old hardware or a bulging photo/video library. Just saying.
@shizuka wasn’t wrong about the frustration, but hey, that’s the Apple way. “You don’t need full control, we’ll decide for you,” amirite? At the end of the day, those cache demons you’re chasing might not even be as big a deal as it feels. Or maybe they’re giants. Who knows?