Because tempered tuning is compromised, these intervals are confusing, as they are almost all actually out of tune. It is easy to identify basic intervals when they are justly tuned, and after that is learned it is much easier to identify tempered intervals as well. The majority of these "ear-training" programs are totally oblivious to this and are not a good way to learn.

I am a professional guitar teacher and have a classical degree. I went through all of music school aural skills classes using programs like this and pianos in class, and even though I got A's, I only finally learned how to really hear pitch after singing barbershop harmony and hearing truly tuned intervals for the first time.

Do not waste your time or money on ANY ear-training program that only uses tempered tuning.