1. Highlight is that in case if able to find the answer also we can use the hints which has been given without costing anything really useful for us that's why I have given five star rating for this appThoroughly entertaining and educational.
2. Half of the problems are great for exercising logical parts of your brain but the other half are either so out of order as to be nonsensical or written incompletely/unintelligibly.
3. 10/10.wonderful. very helpful for teachers and students.
4. Along with challenging the brain.
5. It's obnoxious.Love this app.
6. Today only I've download.