"Frøy" is an alternative version of the name "Frei" and in many ways FROY turns FREI on its head and refocuses around a different set of core features giving you control over the two fully independent phaser circuits within the same authentic Uni-Vibe preamp and mixer configuration.
It gives me slow and thumpy Uni-Vibe as well as that quick-and-slow-at-the-same-time combo of the two, for whenever you want to move your sound from thick and gooey fuzz tones into lighter, shimmery, mysterious rotary sounds.