How to Clear Cache on Android: Every App, What It Deletes and When It Is Worth It
Cache versus data, the settings path on Pixel, Samsung and Xiaomi, and what cleaner apps really do
Short answer: on Android, clearing an app's cache is safe, loses nothing and is done per app under Settings > Apps > the app > Storage and cache > Clear cache. There has been no system-wide "clear all caches" button since Android 8, so a cleaner app is the only way to do it for every app at once. Clearing cache does not make a phone faster; it frees space, and only matters when storage is nearly full.
This guide explains the difference between cache and app data, shows where the button is on the three most common Android skins, lists the apps whose caches actually reach gigabytes, and separates what is worth doing from what is marketing.
Key Takeaways
- Cache is temporary data an app can rebuild: thumbnails, previews, downloaded images. Clearing it never signs you out or changes settings.
- Clear storage (also called Clear data) is different: it resets the app to a fresh install, signs you out and deletes offline content.
- Android 8 (Oreo) removed the Cached data line that cleared every cache at once; since then the setting is per app.
- Browsers, social apps and streaming apps are the usual culprits: Chrome, Instagram, YouTube and Spotify caches can each reach several gigabytes.
- Clearing cache does not speed up Android; performance only suffers when storage is more than about 90 percent full, and RAM boosters make things worse.
- The thumbnail cache used by galleries can grow to gigabytes on its own and is safe to delete; it is rebuilt as you browse.
What each Android storage action removes
| Action | What is deleted | Signs you out? | Settings kept? |
|---|---|---|---|
| Clear cache | Temporary files, thumbnails, downloaded previews | No | Yes |
| Clear storage / Clear data | Everything the app stored on the phone, including offline content | Yes | No |
| Uninstall | The app and its data, except folders left under Android/media | Yes | No |
| Offload or Archive (Android 15+) | The app's code; data and settings are kept for reinstalling | No | Yes |
Cache Versus Storage: the Difference That Matters
Every Android app keeps two kinds of files. Cache holds things the app can download or generate again: image previews in Instagram, article text in a news app, the thumbnails a gallery shows while scrolling. App storage, sometimes labeled data, holds things that cannot be rebuilt: your login session, settings, offline downloads and unsent drafts.
Clearing cache is therefore harmless. The app starts a little slower next time while it rebuilds its previews, and that is all. Clearing storage is a reset: the app behaves as if just installed, you are signed out, and offline maps, downloaded playlists and local documents are gone. Android puts both buttons next to each other, which is why people lose data while trying to save space.
The table below summarizes what each action removes. If in doubt, clear cache first and look at Settings > Storage again; the gain from clearing storage on top of it is usually small and the cost is high.
Where the Button Is on Pixel, Samsung and Xiaomi
Android has not had a global cache button since version 8 (Oreo) removed the Cached data line from Settings > Storage. On a Pixel or any phone close to stock Android, the path is Settings > Apps > See all apps > the app > Storage and cache > Clear cache. Settings > Storage > Apps shows the same apps sorted by size, which is the fastest way to find the heavy ones.
Samsung's One UI moves the button one level down: Settings > Apps > the app > Storage > Clear cache, with a Clear data button beside it. Device care (Settings > Device care > Storage) offers an Apps view sorted by size and its own cleanup suggestions, which are safe but mostly duplicate what Settings already does.
Xiaomi, Redmi and POCO phones on MIUI or HyperOS use Settings > Apps > Manage apps > the app > Clear data, which opens a small menu with Clear cache and Clear all data as separate choices. The built-in Cleaner app also targets caches, but it is aggressive about recommending deletions and shows ads; read its list before confirming.
The Caches That Actually Matter
Most apps keep caches of a few megabytes, and clearing them is not worth the tapping. The gigabytes sit in a handful of categories. Browsers: Chrome routinely holds 1 to 3 GB of cached pages and images. Social apps: Instagram, TikTok, Facebook and X cache every video and image you scroll past, and 2 to 5 GB is common on a heavy user's phone. Maps: Google Maps caches map tiles and can pass 1 GB.
Streaming apps are a special case because they mix cache with offline downloads. Spotify's Settings > Storage separates the two, and its cache alone can exceed 5 GB. YouTube, Netflix and podcast apps keep downloaded episodes as offline content rather than cache; those are cleared from the app's Downloads section, not from Settings.
Two caches never appear in any app's settings. The gallery thumbnail cache (a hidden .thumbnails folder in the DCIM directory) grows with every photo and can reach several gigabytes, and installer files (.apk) downloaded for sideloading sit in Downloads long after installation. Both are safe to delete and both are covered by Disk Mop's one-tap junk clean, along with temporary files and empty folders, with the size of each item shown before you confirm.
Does Clearing Cache Speed Up Android?
No, and the belief that it does is the reason so many cleaner apps exist. A cache exists to make the app faster; after you clear it, the app has to download or regenerate what it just lost, so the next launch is slower, not faster. Android manages memory itself and closes background apps when it needs to; RAM booster apps that kill them force the system to reload everything and drain the battery.
Storage does affect performance in one specific case: when the phone is more than about 90 percent full, the flash storage runs out of empty blocks to write to and every save slows down. That is when clearing caches, deleting large videos and removing old downloads produces a noticeable difference, not because the cache was slow but because free space was gone.
So the honest rule is to clear cache when you need the space, not on a schedule. Disk Mop follows that rule: it does not claim to speed up the phone, it shows what each item costs in storage, and its app manager lists caches by size and apps you have not opened in 30 days so the decision is yours.
Frequently Asked Questions
How often should I clear cache on Android?
Only when you need the space. Cache makes apps faster, and clearing it on a schedule just forces apps to download the same data again. Look at Settings > Storage when the phone warns you, and clear the largest caches then.
Is it safe to clear the cache of all apps?
Yes. Cache is by definition data the app can rebuild. You will not be signed out and no settings change. Clear storage or Clear data is the option to avoid unless you mean to reset the app.
Why does the cache come back after I clear it?
Because the app rebuilds it as you use it; that is what cache is for. Growth back to a few hundred megabytes is normal. If one app rebuilds gigabytes within days, check its own settings for an offline or cache limit.
Do cleaner apps that promise a speed boost work?
No. Killing background apps and clearing RAM makes Android reload everything and use more battery. A useful cleaner frees storage and shows you what it deletes; be wary of ones that promise speed, show ads or ask for an account.
Verdict
Clearing cache on Android is safe, per app, and worth doing when storage runs low rather than on a schedule. The real space is in browsers, social apps, streaming caches, the thumbnail folder and forgotten installers, and the one button to avoid is Clear storage, which resets the app.
Disk Mop for Android puts all of that on one screen: app caches sorted by size, apps unused for 30 days, and a one-tap junk clean for thumbnails, temp files, installers and empty folders. It shows every size before deleting, selects nothing for you, and does not pretend to make the phone faster.
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