.Training your ears in the music and audio realm is best practiced in a confined space in which one can routinely push his/her own limitations and skills. In this case, regarding modern technological progress and culture, the home studio is the most effective place to do just that.
There are no native applications for IOS and Android at the moment.
Nevertheless, ToneGym is a web application. As such, ToneGym is fully compatible with mobile devices.
To save ToneGym to your homescreen fiollow this tutorial.