Did you know ireal pro can be switched to show NNS numbers instead of the normal chord names?
This is how ireapl pro looks after install:
To switch to scale degrees just click on the pemcil icon and on “Fonts” (sorry, my ireal pro runs on a german phone – I can’t switch it to English)
In the next screen you will find Numbersystem:
Switch to it and your ireal pro will look like this:
So much more convenient for functional ear training 😉 !!!