Ok could be improved

The sounds and pronunciation are ok but the transliteration or English letters for the Chinese sounds are weak. It is inconsistent but closest to Pinyin. It is not the Wade-Giles or the Yale system which were older methods of transliteration. Although somewhat weak and inconsistent the English words do give the student a rough idea of how the words should be pronounced, and of course the backup is to listen to the phrase. I think if this German fellow used the Pinyin properly the app would be much better.

Bairenjie about Speak Chinese!, v2.0