Welcome to the quarter tone interval ear trainer! This app will help you develop your ear and learn to recognize quarter tone intervals. You may change the settings, or play with the default settings.
This app works best on the Firefox browser. With Firefox, each tone is produced with overtones, which makes identification easier when both tones are produced simultaneously. This app is also reported to not work well on Safari browser. If you experience any problems with the tone production, try using Firefox.
You may change the settings of the test below: