This app was working well. I have the paid version. However, when it came time to listen to me say uno, dos the app fails. I have said the words well over a hundred times. Then I used a recording device to record the apps voices saying uno, dos. I played those recording and still the app refuses to accept the correct pronunciation of the word dos. It shows the word uno in blue after saying it so I know it is the word dos that the app is messed up on.