Subdomain Finder is a free Android utility that scans entire domains to uncover as many subdomains as possible. Developed by chie, this tool can be useful for security researchers, web developers, and anyone looking to explore a website's structure.

The app's interface is simple and easy to navigate. Users can enter a domain name and initiate the scanning process with a single tap. The scanning speed is impressive, and the results are displayed in real-time. Subdomains are listed alphabetically, and users can tap on each one to see its IP address.

Overall, Subdomain Finder is a useful tool for anyone looking to discover subdomains quickly. Its simple interface and fast scanning speed make it a great addition to any web developer's toolkit.