Review and Ratings:
Concept/Innovative : 0.8 - Name of the app is enough to know the concept of the app. Concept is common but this app works on apple watch too!
Usability: 0.9 - Spend little time on this app and its very easy to use!
Functionality/Correctness : 0.8 - No major issues found. Crashed several times while playing with the passcode option!
User Interface : 0.8 - User interface simple but very effective.
Performance : 0.8 - Overall perfromance of this app is satisfactory. It's Worth having this app in your device