Please try one of the possible solutions below if your download fails, then re-download the app:

- An unstable connection can interrupt the download. Please ensure you have a steady Wi-Fi connection.

- Try turning your device off, waiting a few minutes and turning it back on again.

- You may be unable to download the app normally if you have too much data already stored on your device. Try deleting unnecessary files.

*If you are still experiencing difficulties downloading the app, please contact Apple's customer support: http://www.apple.com/support/contact/