The ​Pocket Ear Trainer App

Today's app is the ​Pocket Ear Trainer app:

Pocket Ear Trainer (Polemics Applications LLC) Contains randomized ear trainers for chords, intervals, and scales; tap Play and app will play a random interval, scale, or chord and user selects what type it is; also includes a reference and practice section; read information about the sounds being played and selectively hear certain intervals, chords, and scales; created by a music educator with college music students, band directors, and musicians of all types in mind; learning to recognize intervals by ear is an important part of playing music by ear and an important part of overall musicianship; (iOS 5.1 or later).