Other online vocal programs might take a diagnostic approach where a coach will listen to your voice and tell you what's missing, e.g. "you don't have enough chest voice", "your head voice is weak", or "your registers are disconnected", etc.
But we listen to voices differently.
We believe that your voice was designed to work perfectly for you. The only reason you might be struggling with singing right now is simply because you have, what we call, Unhelpful Habits.
Without identifying and shifting those habits FIRST, you won't be able to fully discover your chest, head, mix, or any technique you're hoping to master.