Your biggest apps are often the easiest gigabytes to reclaim. Go to Settings > General > iPhone Storage, where iOS lists every app by size, then tap one and choose Offload App to remove the app itself while keeping its documents and data. When you reinstall later, everything is right where you left it.
TL;DR
- Settings > General > iPhone Storage ranks your apps by how much space they use.
- Offload App removes the app but keeps your documents and data; reinstall to pick up where you left off.
- Delete App removes everything, including saved data.
- Offloading is reversible as long as the app stays available in the App Store.
- Offloading is the safe choice for games and media apps that are huge but rarely opened.
How do I find the biggest apps on my iPhone?
Use the exact path:
- Open Settings.
- Tap General.
- Tap iPhone Storage.
Give it a few seconds to calculate. You'll see a colored bar showing what's using space, then a list of apps sorted from largest to smallest. Each app shows its own size plus the size of its documents and data, so you can tell whether the app or its cached content is the real problem. Tap any app to see its details and your options.
Games, streaming apps, and anything that downloads media tend to sit at the top. Those are usually your best targets.
What's the difference between Offload App and Delete App?
Inside an app's detail screen you'll see two buttons:
- Offload App removes the app's program files but keeps all its documents and data. The app icon stays on your Home Screen with a small cloud badge. Tap it later and iOS reinstalls the app, restoring your data and settings.
- Delete App removes the app and everything tied to it, including saved files, logins, and progress that aren't stored elsewhere.
For a 4 GB game you haven't touched in months, offloading reclaims most of that space while keeping your save data. That's the move when you want space back without losing anything. If you'd rather not touch your apps at all, there are other ways to manage storage.
What does iOS do natively, and where does it stop?
Natively, iOS can offload unused apps automatically. Turn it on at Settings > App Store > Offload Unused Apps. With it enabled, iOS quietly offloads apps you rarely open when storage runs low, keeping their data intact.
Where it stops is control and certainty. Automatic offloading only triggers when space is tight, picks the apps for you, and won't help with apps you use just often enough to dodge it. It also can't reach into an app to clear caches; it only removes the app shell. For a specific 6 GB app you want gone today, the manual offload above is faster and more predictable.
Is offloading reversible, and could I lose anything?
Offloading is reversible. Your documents and data stay on the device, and reinstalling restores the app to its previous state. The one real caveat: reinstalling pulls the app from the App Store, so if the developer has removed it, you may not be able to get it back. For apps still actively published, offloading is low risk.
Delete App is the one to think twice about. Anything stored only inside that app, such as local game progress or unsynced files, is gone for good. Before deleting, confirm that anything you care about is backed up or synced to an account. Check Settings > [your name] > iCloud to see what's syncing, and back up your device under Settings > [your name] > iCloud > iCloud Backup if you're unsure. When in doubt, offload instead of delete.
FAQ
Does offloading an app delete my data?
No. Offloading keeps your documents and data on the device. Only the app's program files are removed. When you reinstall, your data and settings come back as they were.
How do I get an offloaded app back?
Tap the app's icon on your Home Screen; it keeps a small cloud badge while offloaded. iOS downloads the app again from the App Store and restores your saved data automatically, as long as the app is still available.
Should I offload or delete an app to save the most space?
Deleting reclaims slightly more space because it also removes documents and data, but you lose that data. Offloading recovers nearly as much while keeping everything, so it's the better choice unless you're certain you no longer need the app or its content.
Want to see which apps and files are quietly eating your storage before you decide? Cleanor for iPhone surfaces the biggest space hogs at a glance. For the full picture, read our guide to free up iPhone space.