LokLok is primarily known as a mobile app designed for Android devices. Users can create lock screen drawings and share them with friends who also have the app installed. However, LokLok for PC might have been developed or updated after my last training.
As for age restrictions, it's important to note that app developers often set age restrictions based on the content and features of their app. Typically, social or communication apps may have age restrictions to comply with privacy laws and regulations, such as the Children's Online Privacy Protection Act (COPPA) in the United States.