I've only spent about an hour with it, but I can already see the potential as a subtle or extreme effect. I used it on a hybrid electronic drum kit and it instantly added thickness with some pitch shifting that brings out the kick drum and toms in a unique way. Then I tried it with some spoken word recordings and there is serious magic to be found in their modulation system. Instant sci-fi vocals!!
Here is a quote from their website: "MagicPitch is a multi-curve spectral pitch and frequency shifter with a built-in modulation system. De-tune harmonics, fatten up your drums, create otherworldly vocals - it’s all there! Easily and quickly apply separate pitch and frequency shifting per frequency, or ranges of frequencies. Mix them, modulate them, spread them, run wild, and create original frequency transformations from subtle de-tunings to extreme effects on the brink of insanity."
You can download a fully-functioning demo without having to sign up for anything. And the intro price of $49.49 seems very fair considering the quality of DSP on hand. Sound designers should definitely take notice if you're looking for a new approach to pitch and frequency-shifting. Great work from the entire GS DSP team!!

