Try 'Brain Teasers Plus' app

Hi, I am new here as well I am new in android programming . So this is my first try to make an android app. Its about brain teasers, riddles, puzzles. Please have a look at it. Let me know what improvements I can make in it.

Brain Teasers Plus <link>: https://play.google.com/store/apps/details?id=com.sanjaykum4r.brainteasersplus

Brain Teasers <link>: https://play.google.com/store/apps/details?id=com.sanjaykum4r.brainteasers

Thanks