Fidget spinners has been advertised as a toy that is helping people who have trouble with focusing or fidgeting by relieving nervous energy or psychological stress. There has been several studies and articles about whether fidget spinners are at all effective or not. So far none of them has clinically confirmed what the toy has been advertised for- a product perfect for children with attention-deficit/hyperactivity disorder, autism, anxiety.
According to Washington Post, a study by Daniel Willingham and Daniel Ansari, researchers from Western University in Canada came to the conclusion that, “That’s why we liked the fidget spinner idea; it’s a little twist on a familiar task. It won’t be to every teacher’s taste, but we can say that there is no evidence it will prompt the problems that some feared.”
On the other hand, Taylor-Klaus, co-founder of Impact ADHD, a renowned coaching service for children with attention disorders, has informed CNN that although there hasn’t been any clinical proof but their feedback shows it is helping students with attention disorder. "Promoting fidgeting is a common method for managing attention regulation," said Elaine Taylor-Klaus to CNN. She also added: “What a fidget allows some people -- not all people -- to focus their attention on what they want to focus on, because there's sort of a background motion that's occupying that need.”
So bottom-line: as of May 2017, there is no scientific evidence that they are effective as a treatment for autism or ADHD. For use other tools for example white noise generator to make your work environment more productive and noise free.