This app is very bad it. Do not study what is written in the question correctly and most of the times it use to say just rhat it is not readable we will work on that I do not know which daybwill come on which day tahybwill be able to solve those problems. I do not know sometimes simple equations are also out of there reach. They have to work a lot on theair app. And then come with the new upgraded version.i like its layout and design.ots very amazing.and feature and function also like it.i like it this .but no solve my problem. I suggest this app .show correctly answer of the question. Thank u dor reading my review.