Coopleteer.com consists of 2 Android apps: Cooplet Builder and Cooplet Engine. The former is used to build cooplets, and the latter is used to run cooplets which other users have already built. Users who want to browse/maintain databases which are managed by an existing cooplet do not need Cooplet Builder, they only need Cooplet Engine. Cooperscript developers need Cooplet Builder to develop cooplets. Cooplet Builder encompasses the full functionality of Cooplet Engine, so developers need not install Cooplet Engine. Both Android apps are free downloads, but many users will choose to become paid subscribers, so they can receive perks such as full read/write access to cooplet databases.