Its catalog includes social media and video entertainment apps, games across multiple genres, productivity tools, system utilities, educational resources, and software for creative work such as photo editing. The service is designed to help users browse, find, download, and update software through an organized interface and an integrated download manager that can resume interrupted transfers.

The platform states that uploaded files undergo security scanning and that its collection is updated regularly with new releases and bug fixes. It also provides account registration and login options, along with alternative access links and customer support channels described as including live chat and email. The listed Android app is version 3.5.2, with a 32 MB download size and support for Android 6.0 or later. rt99 presents itself as an accessible one-stop source for software spanning everyday utility, learning, productivity, and entertainment.