Word Sweeper makes use of several technologies and free resources. They are morally summarized below.
For its corpus (vocabulary), Word Sweeper uses the BNC/COCA headword lists. As such, the list is limited to most common 10.000 words in British English.
Free Dictionary API is used to fetch English language descriptions, while Google Cloud Translation is used to translate found words into device language.
Word Sweeper uses the Nunito font family for its user interface. This is part of Google's free font library.
Word Sweeper uses numerous assets from the wonderful Pixabay sound effect and music library. Particular thanks go to users emircanalp, floraphonic, freesound_community, Liecio, pixabay, r-0-t-0, u_ss015dykrt, UNIVERSFIELD for sound effects and users cyrusNONAME and nojisuma for music.