Company Penyo Pal Inc. created these great apps:
Learn Mandarin Chinese Vocabulary - Start Learning for Free! Fun, fast and easy flash card word game for kids and adults. Great intro language practice for beginners., VivaVocab! Smart Flash Cards, Learn Mandarin with Penyo Pal Dance Party, Learn English Vocabulary - Start Learning for Free! Fun, fast and easy flash card word game for kids and adults. Great ESL and intro language practice for beginners., Speak Mandarin Chinese with Private Eye, a conversational learning game, and others..