The better the quality of your head phone is, the better your score will be.
This app is made for musicians who want to train relative pitch within a key. It is also possible to test if you have perfect pitch. With this app you can also test if you recognize a sequence of tones. The sequences are not entirely picked at random. Subtle differences make it harder to avoid making mistakes.
The instruments that are being used in this app are Piano, Oliver and Cello, all tuned in C major. Oliver is a boy soprano. In the paid app Perfect and Relative Pitch 2 different instruments are being used in more keys.
This app is free and Ad-Free. Perfect and Relative Pitch 1 has been designed for smartphone, but it will work on a tablet as well. Android 4.1.1 and up!