What Is Cache and Why Does It Grow?
Every app on your Android phone stores temporary data called "cache." When you scroll Instagram, it caches images so they load instantly when you scroll back. When Chrome loads a website, it caches the page so it loads faster next time. When YouTube plays a video, it buffers ahead and stores that data as cache.
This is useful — apps feel faster because they don't re-download everything. But cache accumulates silently:
| App | Typical cache after 6 months |
|---|---|
| Chrome / Firefox | 500 MB – 2 GB |
| 1 – 3 GB | |
| TikTok | 1 – 4 GB |
| YouTube | 500 MB – 2 GB |
| 500 MB – 1.5 GB | |
| Spotify | 1 – 3 GB (offline songs are separate) |
| Maps (Google/Waze) | 500 MB – 1 GB |
| Games | 200 MB – 2 GB each |
Total: A typical phone accumulates 4-12 GB of cache over 6 months. On a 64 GB phone, that's 6-19% of total storage consumed by temporary files you don't need.
Method 1: AnExplorer Memory Cleaner (Recommended)
AnExplorer's Memory Cleaner provides a safe, comprehensive cleanup:
- Open AnExplorer → ☰ → Memory Cleaner
- Wait for the scan to complete (5-15 seconds)
- Review categories:
- App cache — temporary files from all apps
- Empty folders — leftover directories from uninstalled apps
- APK files — installation files left after app installs
- Thumbnails — image previews that can be regenerated
- Log files — debug logs from apps and system
- Select what to clean → tap Clean
What Memory Cleaner won't touch:
- Your photos and videos
- App data (logins, settings, progress)
- Messages and contacts
- Downloaded files you saved intentionally
- Music and podcasts
It only removes files that are safe to delete — temporary data that apps will recreate as needed.
Method 2: Clear Cache Per App (Android Settings)
For targeted cleanup of specific apps:
- Settings → Apps (or App management)
- Tap the app you want to clear (sort by size to find the biggest)
- Tap Storage (or Storage & cache)
- Tap Clear cache
Do NOT tap "Clear data/storage" unless you want to reset the app completely (lose logins, settings, etc.).
Top apps to clear first (usually the biggest cache):
- Chrome/Firefox (web cache)
- Instagram/TikTok/Facebook (image/video cache)
- YouTube (video buffer cache)
- Spotify/music apps (album art cache — not offline songs)
- Maps (map tile cache)
Method 3: System-Wide Cache Clear (Android 11 and below)
On Android 11 and earlier, you can clear all app cache at once:
- Settings → Storage
- Tap "Cached data"
- Confirm "Clear cached data?"
- All app cache cleared in one tap
Note: Google removed this option in Android 12+. On newer Android versions, you must clear cache per-app or use AnExplorer's Memory Cleaner.
What's Safe to Delete vs What's Not
| Safe to delete (cache/temp) | NOT safe to delete (data) |
|---|---|
| App cache | App logins and settings |
| Thumbnail cache | Photos and videos |
| Browser cache | Downloaded files |
| Empty folders | Messages and chat history |
| Leftover APKs | Game progress and saves |
| Log files | Music and podcast downloads |
| Ad cache | Documents and notes |
Rule: If it says "cache" or "temp," it's safe. If it says "data" or "storage," it contains your actual content.
How Often Should You Clear Cache?
Every 2-3 months: Good maintenance schedule for most users. Prevents cache from growing too large.
When storage is critically low: Clear immediately — cache is the fastest way to reclaim space without losing anything important.
After app updates: Large app updates sometimes leave old cache that's no longer compatible. Clearing after major updates can fix glitches.
Never needed: If you have plenty of storage (256+ GB) and no performance issues, there's no reason to clear cache. It actually makes apps faster.
Beyond Cache: Other Storage Consumers
Cache is just one part of storage consumption. AnExplorer's Memory Cleaner also identifies:
Duplicate photos: Multiple copies of the same image (from screenshots, downloads, messaging). Can consume 1-5 GB.
Large downloads: Forgotten files in the Downloads folder — old PDFs, APKs, ZIP files. Often 2-10 GB.
WhatsApp media: Videos and images received in WhatsApp accumulate in Android/media/com.whatsapp/. Often 5-20 GB on active users.
Old app data: Uninstalled apps sometimes leave data behind in Android/data/. AnExplorer can identify and remove these orphaned folders.
Clearing Cache on Specific Devices
Samsung Galaxy: Settings → Device care → Storage → Clean now (Samsung's built-in cleaner). Or use AnExplorer for more control.
Xiaomi/Redmi: Settings → Storage → Clean up (MIUI cleaner). Or Settings → Apps → individual app → Clear cache.
OnePlus: Settings → Storage → Free up space. Or per-app: Settings → Apps → app → Storage → Clear cache.
Pixel/Stock Android: Settings → Storage → Free up space. Or per-app in Settings → Apps.
AnExplorer's Memory Cleaner works identically on all brands — one consistent interface regardless of your phone manufacturer.
Related Guides
- Android Storage Full — comprehensive guide to freeing storage
- WhatsApp Storage Full — manage WhatsApp's media consumption
- Can't Delete Files — fix file deletion permission errors
- Memory Cleaner — AnExplorer's built-in cleanup tool