By Jung Eui Hyung.
Compatibility: Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5, iPhone 6, and iPhone 6 Plus.
Price: Usually £0.99 but FREE for a limited time.
Eureka is quite simply a quick memo and to do list app
Follow the link on an iOS device or via iTunes on your PC: