If you are prompted to update the game to its latest version, but cannot see the update in your App Store, just follow these simple steps:

1. Open the App Store app, and go the Updates tab
2. If the game does not appear in the list of available updates, swipe the page down to refresh it
3. Once the page is refreshed, Rumble Stars will become visible and ready for updating
4. Update your game

You're set!