DNS ugunsmūris is a free utility app for iPhone designed to enhance online security by providing active protection against harmful internet resources. It identifies and blocks access to websites associated with fraudulent activities and malware distribution in real-time, safeguarding users from potential threats. The app features instant alerts whenever a dangerous website is detected, allowing users to stay informed and take control of their online safety. Additionally, it offers call blocking for fraudulent calls identified by CERT.LV, ensuring a comprehensive security approach.

The application operates by utilizing the VpnService API to securely route DNS requests, effectively identifying and protecting against harmful domains without affecting other network traffic. This method enhances security while maintaining performance. Importantly, DNS ugunsmūris prioritizes user privacy by not collecting unnecessary data, ensuring that all information is solely used to improve the app's functionality. With its proactive threat prevention, this app stands out as a robust solution for users seeking to enhance their online safety.