Its catalogue includes social media, video and media players, productivity tools, educational apps, design software, security utilities, document tools and popular mobile games. The site organizes listings with descriptions and system requirements to help users find suitable downloads, and provides recommendations based on popular categories, ratings and download activity.

The platform says its APK files undergo security checks for viruses and malware, with digital signatures verified for official developer apps. It also highlights fast downloads, regular catalogue updates and a straightforward interface designed for both new and experienced users. Visitors can search for software, download installation files and create accounts to manage profiles, review download history and save favourites. v21 describes alternative access options, including its mobile app and mirror domains, and offers customer assistance through live chat, email and a contact form.