Does Not Work on iPhone 4 w/ iOS 7 – NPS Independence Junior Ranger Review

Downloaded this for my Jr. Ranger and was disappointed to discover that it crashes after showing splash screen on iPhone 4 running iOS 7.1.2. The app says it requires iOS7 and only that it's optimized for iPhone 5. It does not say iPhone 5 is required.
Review by Wrecked 'Em on NPS Independence Junior Ranger.