Vietnamese Drill is a free browser app for practising Vietnamese typing and pronunciation at the same time. You see a picture and a translation first and try to recall the phrase. Then it appears and is read aloud twice — slower the second time. TELEX is converted as you type, so no UniKey is needed: type "chaof" and you get "chào". Voice input turns on automatically, so you can check your accent, not just your spelling. 20 everyday phrases, word-by-word breakdowns, UI in 11 languages.