Biografías is an Android application that provides a comprehensive collection of biographies of famous people. The biographies are arranged alphabetically by the first surname of the person. The app includes a search function and indexes, taking into account variations in spelling due to castellanization or conservation of names, and fluctuations in transcription of non-Latin alphabets such as Arabic, Chinese, or Russian.

The app also takes into account the use of pseudonyms or stage names by some famous people. In general, the more common names are used in the indexes, such as Marilyn Monroe (real name Norma Jean Baker) or Pablo Neruda (pseudonym of Neftalí Ricardo Reyes). Nicknames or aliases are used only when the person is more commonly known by that name, such as El Empecinado or La Argentinita.

Overall, Biografías is a useful app for those interested in learning about the lives of famous people. The app is free and falls under the Education & Reference category.