Here are two must-have ear training software for any musician trying to develop their relative pitch.
EarMaster is probably the most comprehensive interactive ear training software that’s available for both MAC and PC. What I love about this software is that you can record and chart your progress. Every ear training session has the option to be customized so you can focus your attention on specific intervals or chords. The ability to chart your progress is critical to goal setting and breaking those goals.
Transcribe is a software for helping musicians to work out music from recordings. It is also used by many people for play-along practice, and also for speech transcription. This software is so easy to use and is insanely fast! It can render many types of audio formats and slow them down instantly without changing the pitch. The software also has the ability to analyze and decipher chords by projecting the notes on a visual keyboard.