666i presents itself as an Android software and app download platform offering content across social networking, video and entertainment, productivity, utilities, games, education, multimedia, and development tools. Its catalog is intended to help users discover and download apps in one place, with browsing by category and featured or popular recommendations. The site says available software is checked for security, including virus and malware scanning, and highlights regular updates to help users access newer versions. It also promotes a straightforward interface and a simple download process, with app descriptions and screenshots to support browsing.

The platform includes account registration and login, password recovery, and customer support through a contact form or email. It says users may find official alternative links through its social channels or community forums if the main site is unavailable. The scraped listing identifies version 3.0.1, a 62 MB file size, Android 6.0 or later, and 666i Studios as the developer. It also displays an all-ages content rating and reports more than five million downloads.