MathL-Oral arithmetic learning app for iPhone and iPad

MathL is an oral arithmetic practice software based on voice communication.
It is an easy to learn, easy to understand, simple to operate and powerful oral arithmetic practice software. It is suitable for young children. 
The feature of the software is to practice using voice communication throughout the whole process, make questions by voice, judge whether the voice is right or wrong, and the eyes do not have to look at the screen, so as to effectively protect their eyesight. Voice communication can also improve childrens listening and speaking ability.