No, belay that. Fit2Go is a → cellphone App that allows a basic audiogram to be entered and settings based on that to be applied to the hearing aids. The Fit2Go App has versions for both Android and Apple.
ToggleFit also has a similar purpose. But uses pre-configured profiles instead of an Audiogram.
Scroll down to find (Fitting without PC) near the bottom of this link to → AudioService Portfolio of basic Models.