Research from Northwestern University found gay and bisexual teens are using Grindr to find friends and relationships despite the app’s age restrictions.

The study, which was published in the Journal of Adolescent Health, found that 50 percent of 14- to 17-year-olds use the app. According to PinkNews, the study is one of the first of its kind and featured a survey of 200 sexually active teens who have used the app.

“We found that teens in this study were super excited that somebody was paying attention with what was going on in their lives and how these apps played a role in their sexual development and coming-out process.” Kathryn Macapagal, the author of the study, said to the Chicago Tribune.

Notably, Grindr has a requirement to be 18 to use the app. Some teens have falsely filled out the information to be able to use the app, according to PinkNews.

“Grindr does not condone illegal or improper behavior and we are troubled that an underage person may have been using our app in violation of our terms of service,” a Grindr spokesperson said to the Tribune. “Grindr services are only available for adults. Grindr encourages anyone aware of any illegal or improper activity on the app to submit a report either within the app or via email.”