Review and Ratings:
Concept/Innovative : 0.9 - This app accepts input from user's handwriting then it converts into digital format and does the calculations. It covers almost all the mathematical concepts. This is a must have app!
Usability: 1.0 - Very user friendly. Tutorial covers everything and helps user to get used of it quickly.
Functionality/Correctness : 1.0 - No issues found. It gives a very smooth experience.
User Interface : 0.6 - User interface is good.
Performance : 1.0 - Complete satisfaction, thats all we can say about it.