V or W is an app from englishilemanglishukal.com to assist you to improve your pronunciation of the English language.
V or W includes a quiz where you listen to similar sounding words, to answer correctly you must identify which word you heard. These pairs of words (known as minimal pairs) differ only by the /v/ or /w/ sound.
The quiz introduces you to the International Phonetic Alphabet (IPA) by allowing you to see as well as hear the differences in each of the words.
At the end of each quiz session, you can playback each word and record your own voice to improve your pronunciation of each word.