It was Szavay's third singles WTA Tour title.
Schnyder dropped serve twice in the first set but broke four times. In the second, the fourth-seeded Szavay broke decisively to lead 2-1. Szavay broke twice more in the decider.
"In the first set, I was too excited and that gave the set to the more experienced Patty," Szavay said. "I'm glad I managed to turn the score around and please the home crowd."
Schnyder was gracious in defeat.
"The game (Szavay) produced today was too strong for me," Schnyder said. "I tried my best but Agnes put too much pressure on me and my returns were not very good, either."