Clash of Clans and Clash Royale are small compared to console-style mobile games, but their cache and downloaded assets still grow over months of play. The safe way to reclaim space is to clear the cache or offload the app: on iPhone, Settings > General > iPhone Storage > [game] > Offload App. Your village, cards, and trophies are tied to your Supercell ID (and Game Center or Google Play), so clearing local data never touches your progress.
TL;DR
- Supercell games store local cached assets and logs that grow over time, not your actual save.
- Offload on iPhone to free space while keeping documents: Settings > General > iPhone Storage > [game] > Offload App.
- Progress is bound to your Supercell ID, linked through Game Center or Google Play, so clearing the cache is safe.
- iOS only auto-offloads near a full disk and never clears the in-game cache, so manual cleanup is more reliable.
- Reopening the game re-downloads removed assets; do it on Wi-Fi, not mid-war.
Why do Supercell games use more space than I expected?
The initial download is modest, but both games pull updated graphics, event content, replays, and balance-update assets after install, then cache them locally. Clash Royale also stores battle replays and animations; Clash of Clans caches base layouts, war data, and event visuals. None of this is your progress, it's regenerable content the app keeps to load faster. Over a year of seasons that pile adds up. For the broader pattern across titles, see why mobile games take so much storage and what to clear.
How do I clear the cache safely?
The cleanest method on iPhone is to offload the app, which removes the binary and cache but preserves any local documents:
- Open Settings > General > iPhone Storage.
- Tap Clash of Clans or Clash Royale.
- Tap Offload App.
- Reinstall by tapping the icon, then confirm you're signed into your Supercell ID.
On Android, go to Settings > Apps > [game] > Storage and tap Clear cache (not "Clear storage," which wipes local data). Clearing cache alone is the conservative choice. For a deeper offload walkthrough, see how to offload large apps on iPhone to reclaim gigabytes.
What does the OS do natively, and where does it stop?
iOS offers "Offload Unused Apps," which removes apps you rarely open once storage is tight. The catch: it only fires near a full disk and never trims a frequently played game's internal cache. So if you log in daily for your war attacks, iOS will basically never offload Clash for you, and it can't clear the cache while the app stays active. Android's per-app Clear cache is the direct lever there, but you have to press it yourself. Either way, the OS handles whole-app removal, not ongoing cache cleanup. If your storage looks full with nothing obvious to delete, read iPhone storage full but nothing to delete: what's actually using it.
Will clearing the cache delete my village or cards?
No. Your progress in both games is stored on Supercell's servers and tied to your Supercell ID, with Game Center on iPhone and Google Play on Android as additional links. Offloading, clearing cache, or even reinstalling only removes local files. After you sign back into your Supercell ID, your village, trophies, cards, and clan all return.
The one real cost is re-download. Clearing or offloading forces the game to fetch its assets again on next launch, which uses data and a bit of time. Do it on Wi-Fi and before, not during, a clan war or important match, so you're not waiting on downloads at a bad moment.
FAQ
Is it safe to clear Clash of Clans cache?
Yes. The cache holds regenerable assets, not your save. Your village and progress are bound to your Supercell ID on Supercell's servers, so clearing the cache or offloading the app leaves your account untouched.
Do I need to write down my Supercell ID before clearing?
You don't need to write anything down, but you do need to be able to sign back in. Confirm your Supercell ID is set up (and linked to your email) before you reinstall, so restoring progress is one login away.
Why is Clash Royale taking up so much space?
Mostly cached battle replays, animations, and seasonal event assets. These rebuild as you play, so clearing them frees space temporarily and the game gradually re-caches what it needs.
Clearing one game's cache is quick; finding every cache and forgotten download across your phone is where it gets tedious. Cleanor for iPhone scans for heavy apps and reclaimable data in one pass, and our free up iPhone space guide covers the rest. On-device and privacy-first, no account needed.