- The cache speeds up apps by saving temporary data, but it can grow and take up a lot of space.
- Android 9+ does not offer a global cleanup: use Google Files and clean by app from Settings.
- Clearing the cache does not delete your data, only temporary data; avoid pressing Clear storage.
If your Android phone starts running slower just when you need it most, there's a quick trick that often makes a difference: clearing the app cache. This temporary memory stores data that speeds up loading and daily use, but over time it can grow uncontrollably and take up a significant amount of megabytes or even gigabytes.
In this guide, you'll understand exactly what app cache is, when to clear it, and how to do it properly to free up space without losing your data or changing important settings. We'll also cover common problems that can arise after clearing your app cache. Additionally , we'll include methods for deleting temporary files from multiple apps at once, what happens with Android TV and Google TV, and the difference between app cache and browser cache.
What is app cache on Android?
The cache is temporary storage that apps use to save data they'll need frequently, so they don't have to download or generate it every time you open the app. The goal is to speed up loading and reduce data and CPU usage.
Common examples of what is cached are images and videos already viewed within the app, thumbnails, converted copies of files in lighter formats for faster processing, internet data that is not worth downloading again, and temporary states of incomplete processes, such as an edit you have not finished.
This system is beneficial by default : apps open faster, your phone works less, and you use less data. Therefore, having cache is neither bad nor something that needs to be cleared daily.
Advantages of caching and when it becomes a problem
Caching speeds up the experience and avoids repeatedly recalculating or downloading resources. This results in less waiting time, reduced network usage, and a more responsive system for everyday use.
The problem arises when that cache grows uncontrollably and takes up too much internal space , especially on phones with limited storage. In those cases, you might notice slowness, occasional errors, or that you no longer have enough memory to install apps or save photos.
Some apps are known to fill up the cache quickly —browsers like Chrome or social networks—and not all of them manage or clean it automatically, so it's a good idea to check it if you're running low on space.
Over time, it's not uncommon for the cache of several apps to accumulate to more than 1 GB . If you find your storage space is starting to feel cramped, it's time to consider selectively cleaning them up.
When should you clear the cache and how often?
Clear the cache when you notice slowdowns, freezes, unexpected crashes, or strange behavior in a specific app. In these cases, clearing the app's cache often resolves the issues without more drastic measures.
It is also useful after updating important apps if errors appear after the update, as it removes possible outdated temporary remnants that may be interfering.
You don't need to clear the cache daily . As a maintenance practice, you can check it every month or every two weeks if your phone is running low on storage. If you have plenty of space and few apps, you probably won't need to do it at all.
Keep in mind that after clearing the cache, the app's first launch is usually a bit slower because it needs to rebuild temporary data. After that, the speed returns to normal.
How to clear an app's cache on Android step by step
The recommended and safe method is to clear the cache app by app from Settings . It's simple and doesn't delete your personal data or logged-in sessions.
Step-by-step instructions for Android (menu names may vary depending on the manufacturer):
- Open Settings and go to Applications (or Apps and notifications).
- Find and tap the app you want to clean.
- Go to Storage and cache (or Storage Use).
- Tap Clear cache.
Very important: Do not tap Clear storage or Clear data unless you want to reset the app to its factory settings. That option will delete settings, accounts, save data, and preferences.
Is it possible to clear the cache of all apps at once?
In modern Android systems (Android 9 and later), the system button to clear the cache of all apps at once no longer exists . Google removed that feature from the native settings.
Official alternative: Google Files . Google's file management app includes a smart cleanup feature that deletes temporary files and junk files that haven't been used in a while. It usually comes pre-installed on Pixel phones and many Android One devices, and is available for free on the Play Store, without ads or annoying notifications.
How to use Google Files to delete temporary junk files (texts may vary depending on version):
- Open Google Files and go to the cleaning tab.
- Locate the junk or temporary files card.
- Confirm that you want to delete those files and wait until the end of the process.
Keep in mind that Files doesn't delete the entire cache of each app . Its purpose is to remove old or unused temporary files to avoid breaking anything the app is actively using.
In Android 8.0 and earlier versions, there was a button to clear the entire cache : Settings > Storage > Cached data, and then OK. This process completely cleared the cache of all the phone's apps.
Clear cache on Android TV and Google TV
If your Android TV or Google TV is running slowly, clearing the app cache can improve performance and free up space , which is crucial for TVs with limited internal memory.
The procedure is similar to that of a mobile phone : open the TV settings, go to the applications section, select the ones you use most or those that take up the most space, and choose the Clear cache or Delete cache option within each one.
It's not necessary to do it constantly , but it is recommended when you notice that everything is slower than normal or when you run out of space to install new apps.
If you only use a few apps and everything works fine, you might not need it . Prioritize the apps that take up the most space or those that are prone to errors.
Application cache vs. browser cache and cookies
Don't confuse app cache with browser cache or cookies . Although they are conceptually similar, clearing them has different effects.
Your browser cache saves parts of web pages (like images) so they load faster when you return. Cookies store session data and website preferences . Deleting them will require you to log in again from some sites, and certain pages may load more slowly the first time.
If your problem is only with web browsing, clear your browser cache instead of the cache of all apps . In Chrome for Android, for example, you can go to the menu, choose Clear browsing data, check Cached images and files, and confirm. On iPhone, Chrome adds extra steps to check Cookies and site data in addition to the cache.
Other browsers : In Safari for iPhone, go to Settings > Safari and use the Clear History and Website Data option; in Microsoft Edge for Android or iOS, go to Settings > Privacy and security > Clear browsing data and select Cached images and files. If you use Firefox or other browsers, consult their help center for the exact path, as it varies depending on the version.
Common problems when clearing the cache and their solutions
Although the process is simple, sometimes doubts or minor inconveniences arise after clearing the cache . Here are the common scenarios and how to resolve them.
- The app is slow after the cleanupThis is normal on the first opening; the app is rebuilding temporary data. Solution: Use the app a couple of times or restart your phone if the problem persists.
- The cache cannot be cleared due to a system errorSometimes there are occasional glitches. Solution: Update Android if a version is available and restart your device.
- You don't recover much space after deleting.Your storage might be taking up space with photos, videos, or large files. Solution: Check large folders, delete unnecessary items, or move them to the cloud or a microSD card if your phone supports it.
- Preferences seem to be lostSome apps store temporary settings in a cache. Solution: Reconfigure minor details if necessary, and for critical apps, note down the settings before cleaning.
- The app is behaving strangelyIt's rare, but it can happen with corrupted temporary data. Solution: Uninstall and reinstall the app for a complete file cleanup.
What do you gain by clearing the cache, and what doesn't it delete?
Clearing an app's cache frees up space occupied by temporary files that the app might regenerate . It's a quick fix when storage is running low.
It doesn't delete your photos, user data, or accounts . You remain in the app and with your content, unless you tap "Clear storage," which does reset the app as if you had just installed it.
Keep in mind that some apps will rebuild their cache with use , so you'll see that space grow again over time. This is normal.
Cleaning tools and apps: what to use and what to avoid
Google Files is the recommended option for cleaning non-essential temporary files globally . It's free, ad-free, and often comes pre-installed on many devices; if not, you can find it on the Play Store.
There are third-party cleaners that promise to remove junk files, optimize storage, and detect apps that are draining battery or space . Some, like lightweight optimizers, can help identify unnecessary items with just a couple of taps.
Beware of invasive cleaners : avoid apps full of ads, aggressive notifications, or unnecessary permissions. If you opt for a third-party tool, choose trusted developers, carefully review what it will remove, and disable features you don't need.
Best practices for keeping the cache under control
Don't clear the cache daily : a well-managed cache speeds up your apps. Use it for occasional maintenance, not as a constant routine.
Tackle problematic apps first : If you notice a particular app taking up hundreds of megabytes or crashing, uninstall it before the rest. Browsers, social media, and streaming apps are common culprits.
Share tasks between manual and smart cleaning : combine app-based deletion when there are failures with global temporary file cleaning via Files to remove old junk without touching what's in use.
Check your storage frequently if you're running low on memory : Android settings show what's taking up space. This helps you detect sooner if the cache is growing too large again.
What's the deal with iPhones and why is it simpler on Android?
On iPhone, iOS doesn't allow you to clear the cache of any app from the system settings . You have to rely on each app to offer its own built-in clearing option or, ultimately, uninstall and reinstall the app to empty its temporary files.
Android clearly separates Clear cache and Clear data , making it easy to perform a non-destructive cleanup in seconds without losing sessions, settings, or content.
The key to taking care of your Android is understanding that the cache helps, but too much of it hinders performance: clear it when necessary, avoid accidentally tapping the Clear data button, use Files to remove old junk files, and take action against problematic apps; with these habits, you'll gain space and improve performance without sacrificing your data.