Biz Stone: This is what our new app is about

The way 'Super' works
The way 'Super' works   

Twitter co-founder Biz Stone is at it again, developing a new social app called Super. It's the second app launched under his new start-up, and it is all about one thing: fun, Stone told CNBC.

"I've learned over the years when something's fun, then people will use it. If a lot of people use it, it can become important, so the key is to start with fun," Stone, now CEO of Jelly Industries, said in an interview with "Squawk Alley" Monday.

"That's what we were doing when we started Twitter, we were having fun."

With Super, people share their thoughts, which are imposed over photos or artwork. They can be posted on Instagram, Twitter and Facebook.

"You type an opinion in … and an image is automatically suggested for you. So if you are lazy and you don't want to find one, it is automatically suggested based on what you typed," Stone explained.

He called it a "very bold" app that lets anyone become an artist.

It's different from the first app released by Jelly Industries, which is a social network based on question and answers and is called Jelly.

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"Jelly was not fun, it was more like doing homework," he said. "People actually were doing homework with Jelly."

For Stone, there is no specific business model at this stage of the game. Instead, he's watching how the app is used to determine what features can be added.

"The type of patterns we look for now are … what are people trying to do with the app, what kind of value are they trying to get out of it that we can make it easier for them to do," he explained.

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Biz Stone: Twitter's biggest challenge...
Biz Stone: Twitter's biggest challenge...   

He also addressed the challenges that his former company, Twitter, now faces as a public company.

"When a company goes public, you tend to fall into that habit of thinking quarterly and you really have to remind yourself that you are a building a company of eternal value," Stone said. "You have to think decades in advance."

And while some criticized the attitudes in Silicon Valley, Stone said sometimes those attitudes are necessary to get things done.

"Some companies really need to have an aggressive CEO founder in order to push the boundaries, in order to get the things done that they need to get done. I don't need to be that kind of CEO founder because I'm making something that is fun. It's like, take it or leave it."