It would be the best cellphone app (for Android) I have ever found among dozens to learn Chinese and improve your Chinese vocabularies: (1) It contains a myriad of categorized Chinese vocabularies useful in daily life. (2) Each vocabulary is equipped with
English translation, pinyin, Chinese characters and a sound link. (3)
One of the unique useful features of the app is, it can play again and again the sound of a group of categorized vocabularies automatically without stop. So while you are driving
or doing something else, just continually play the group of vocabularies to see if you could catch and understand each of them.
Let me know if you need further assistance or if you have any questions.
Good luck!
Tonny Liu
Founder of Miami Chinese Language Corner
786 261 8912