Numerous websites and apps have age restrictions due to the nature of their content or the products/services they offer. Here are some common types of websites and apps that typically have age restrictions: Adult content websites, gambling and online casinos, alcohol and tobacco retailers, firearms and ammunition retailers, online dating platforms, online gaming, social media platforms, medical and health-related services, financial services, and E-commerce with age-restricted products. It's important to note that age restrictions can vary depending on the country or region, as different jurisdictions have different legal age requirements for specific activities or content. Websites and apps may use various methods, such as age verification solutions, to verify users' ages and enforce these restrictions responsibly.