The Praharaj Purnnachandra Odia Bhashakosha Dictionary App is a free education and reference application available for Android devices. This app is developed by the Digital South Asia Library program at the University of Chicago. It is a searchable version of G.C. Praharaj's "Purnnachandra Odia Bhashakosha" and can be used both online and offline. The app allows users to conduct both headword and full-text queries, with the default mode being headword searches.

Users can search for headwords in Oriya, accented Latin characters, and unaccented Latin characters. The app provides a scrollable list of search suggestions after entering three characters in the search box. The app also supports full-text searches, multi-word searches with boolean operators, and substring matching.

The app operates in online mode by default, but users can switch to offline mode by checking the "Search offline" box in the overflow menu. The app tests for internet connection and remote server availability on start-up. The user should select the appropriate mode before conducting a search. Overall, the Praharaj Purnnachandra Odia Bhashakosha Dictionary App is a useful resource for those seeking to learn and understand the Odia language.