I would suggest Kids Math !
“Kids Math” is a Smartphone application aimed at
perfecting kids learning to recognize,
write and count math digits in a highly interactive fashion. It offers 3 major
absorbing educational levels stages of park, forest and a zoo which further
give user a thorough experience of knowing about and writing digits, knowledge
about shapes and drawing them, animals and counting them. Each phase also
consists of quiz corner where a child can review its gained knowledge.
Kids Math on Google Play - https://play.google.com/store/apps/details?id=com.mobiletin.kidsmath