The Hawkeyes coaches focused on academics with the Indiana defensive lineman. He told them he wanted to attend dental school someday.
"I found things I liked at different places but going to Iowa and getting to sit down with the head of the chemistry department truly distinguishes what's important to them there," he said. "As a recruit, coming in and getting to do that on my first trip there, it means a lot."
The Hawkeyes set the bar high for other schools, Swann suggested.
"With just that one visit and seeing what (Head) Coach (Kirk) Ferentz was about and how close they are almost like a family and how close (Assistant) Coach (Jim) Reid and my father have gotten, we've all connected," he said. "(Iowa is) definitely going to be a front-runner in my decision-making process."
The 6-foot-3, 255-pound Swann said he would be back at Iowa for a spring practice. He's not sure what day that will be.
Swann expects to speak more about football with Reid and Ferentz during his next visit.
"We talked about academics, mostly, this time," he said. "There wasn't too much football discussed. We took tours and (Reid) showed what life's like as a student-athlete. We talked with Coach Ferentz. I got to know him with my father. It was a great time.
"Touring the campus with Coach Reid was great. I got to see where all the classes were laid out and the different buildings that are designated (for Chemistry). They're all in close proximity divided by the river. It was a great feel for what it would be like if I were to choose Iowa."
Swann also toured the football facilities. Iowa's have see significant upgrades in recent years.
"The facilities themselves set themselves apart from other schools," he said.
Swann enjoyed his exposure to Iowa fans at the school's men's basketball game on Saturday.
"My father did make a point that Iowa doesn't have a professional football team or a professional team at all in the state. So, it puts emphasis on their college and they have pride," he said. "The eruption that you could hear just from the basketball game, sold out to knock out Northwestern, I got a great vibe from it. They are crazy for their team. That was impressive to see that and not even getting to see a football game but seeing the basketball energy showed me what Iowa fans are all about."