Clearing the cache on the My Disney Experience (Disney World) or Disneyland app is a crucial step if you find the map is glitching or your Lightning Lane reservations aren't showing up. On Android, you can go to Settings > Apps > Disney > Storage and tap "Clear Cache." On iOS (iPhone), there is no direct "Clear Cache" button for individual apps; instead, you must "Offload" the app. Go to Settings > General > iPhone Storage > Disney and select "Offload App." This removes the temporary data while keeping your login and personal settings. If the app is still being "stubborn," the most effective 2026 fix is to delete the app entirely, restart your phone, and perform a fresh install. This forces the app to download the latest park maps and wait-time data from Disney's servers. Since these apps are incredibly data-heavy, clearing the cache every few months can also help free up several hundred megabytes of storage on your device, making your phone feel snappier.