Streaming App Cache
Also known as: netflix downloads, spotify cache size, streaming app cache
Streaming app cache is the audio, video, and image data apps like Netflix, Spotify, and YouTube store on your device to play smoothly and load offline content. It is one of the largest, fastest-growing cache categories on a phone.
- Streaming caches grow fast because they hold large audio and video data, not small text files.
- Offline downloads are deliberate saves the app keeps; cache is temporary and auto-refetched.
- Clearing cache is safe; clearing app data also deletes saved downloads and may sign you out.
Why streaming apps cache so much
Streaming apps buffer media ahead of playback and keep recently played or browsed content so it loads instantly next time. Music apps cache tracks and artwork; video apps cache thumbnails, preview clips, and segments of the stream. Because media files are large, this app cache balloons far faster than the cache of a typical utility app.
Offline downloads are a separate, heavier bucket. When you save a show, album, or podcast for offline play, the app writes the full media file to storage. Unlike transient cache, these downloads are intentional content the app will not auto-delete, and they can occupy gigabytes.
Cache vs. downloads: what to clear
Clearing cache removes only the temporary buffered data; the app re-fetches it as needed, so nothing you saved is lost. Clearing app data (or the app's in-app "Delete all downloads") removes your saved offline media too, and may sign you out, so treat the two differently.
On Android, check Settings > Apps > [app] > Storage to see the cache size and tap Clear cache. On iOS, apps rarely expose a cache button, so the path is the app's own settings (for example Netflix's "Smart Downloads" or Spotify's storage screen) or offloading via Settings > General > iPhone Storage. A cleaner can identify these heavy media caches and let you reclaim space without removing the downloads you actually want to keep.