Good for ESL, too.
I found the app useful for ESL students. I found the game useful to understand the sounds by repitition. I hope the developer create ESL version by addting pronunciation symbols and grouping the sounds accordingly. Furthermore, it would be even more helpful if we can choose and compare the similar and complicated sound to us by listening as many times as we want .
Yuyuyuki about
PocketPhonics (basic edition)