Oscars 2015: Alexander Schultz Talks 'Foxcatcher,' His Relationship With Mark Ruffalo and New App

— -- The theme at this year's Oscars is nominated movies based on inspiring, real-life stories.

In addition to "American Sniper" and "Selma," there's "Foxcatcher," starring Channing Tatum and Mark Ruffalo as Mark and Dave Schultz, respectively. Both Olympic gold medal wrestlers, who are considered to be among the finest athletes to ever represent the United States.

The story is not just about success though, it also focuses on Steve Carell's character John E. du Pont and his downward spiral, coupled with alcohol and drug abuse. In 1996, du Pont shot and killed his friend Dave Schultz, a crime for which he was convicted of murder and spent the rest of his life in jail until he died in 2010.

Alexander Schultz, 28, knows this story all too well. Dave Schultz was his father. And even though Dave died almost 20 years ago, his impact on his son is still just as strong today, Schulz told ABC News.

"Foxcatcher" is a movie Schultz admits he's seen "too many times actually," he said laughing, adding that he couldn't be happier with Ruffalo's portrayal of his father.

"It's incredibly well done. It's emotional for me. I thought I had got past it, I really cried hard [the first time I saw it], especially at the end there with the murder scene. Then I saw it in Toronto and thought I was okay. I thought, 'It's just a movie, I got it. I'll see my dad, I'll see Ruffalo again.' Then I saw it again and completely broke down again," Schultz said. "Ruffalo does an insane job of playing my dad, it's amazing."

Schultz said the key points about his dad and the "Foxcatcher" story are correct. He said Miller really made sure to get the salient points of his father's close relationship with family and his gregarious nature into the Oscar-nominated movie. Ruffalo, 47, is also nominated for his portrayal of Schultz's father.

"Physically, they really put their heart and soul into it," he said of Ruffalo and Tatum. "My dad and my uncle [Mark] walked super goofy. ... Ruffalo and Channing were just nailing it!"

To this day, Schultz said he and Ruffalo still stay in touch and email from time to time.

"They are super nice, genuine guys. Mark Ruffalo is literally the nicest guy on the planet, he's just only doing good things," he said. "He's saving the world and cares about people a lot. Like Ruffalo should have just played himself in the 'Avengers!'"

As for Tatum, Schultz aid that during filming of "Foxcatcher" was when his status in Hollywood, really went to the next level.

"Even despite being that busy, he made time for me," he said. "Channing is just a real guy."

Schultz may have been young when his father passed, but the tech entrepreneur still has a ton of fond memories about his bigger-than-life dad.

"My dad didn't have a traditional job, so he was home a lot," he said. "I got to hang out with him a lot. He would come to my school and play soccer with the kids at lunch. Me and him were really really close. I remember almost everything from that era."

It's his father's inspiration that propelled Schultz to co-found the Complete App.

Schultz said he was using and getting rid of all these to do apps that just weren't cutting it.

"We have a billion people on these social networks and it's primarily being used for entertainment value," he said, adding that he wanted to create a social network that revolves around what you're going to do instead of having already done. "The interaction is just one-way online."

For example, Schultz lives in San Francisco, and if someone was coming to visit, this app would come in handy since Schultz could help West Coast newbies find a place to eat, a place to stay and even offer to get together to show them around.

He said there are three main reasons people stop short of finishing things they want to do -- time and information gathering, need for accountability and support and connection (wanting to hire someone, but also wanting a recommendation first).

Complete is simple and all the user has to do is create a task, then post to private or public, with the option to add to Twitter or Facebook. Then, it's time to get the task done.