A free program for Android, by Kidgames.

Voice games is an application that lets you play a series of games with your voice – using game concept such as “Spell the word” and “Yes or no.”. You can easily learn English and get to know the vocabulary better by playing a game and learning the name of a certain object.

For the first game, an object will emerge before your eyes, and you will be required to correctly name it using your voice. This means you must use the correct pronunciation. You can say ‘skip’ if the question is too hard.

The second game is based on a concept called ‘associative reaction’ ; if the image that emerges before your eyes matches the text underneath, you must immediately say yes; if not, say no.