Yes, there may be age restrictions on who can use these apps. Most sex hookup apps for Android require users to be at least 18 years of age in order to sign up and use the app. Some apps may also require users to verify their age before they can access certain features or content. Some countries may have laws that prohibit minors from using these types of services. It is important to check the terms and conditions of any app before downloading it and making sure that you are legally allowed to use it in your area.