Human Japanese app designer Brian Rak says he'll be improving the quizzes so users can select the continuous "freestyle mode" of quizzes or a version that awards points toward an overall score.

WSJ: Mobile Apps for Foreign Languages

In management , firms might spend less time on the 20th Century preoccupation with improving efficiency rather than on the 21st Century challenge of generating customer delight through continuous innovation.

FORBES: Learning To Ask The Right Question