With this add-on you can record anonymous answers for up to 5 quizzes. It will record up to 500 submissions per quiz (if more answers get submitted, the oldest ones get deleted - please occasionally export submitted answers if you need to keep them).
If you need to record anonymous answers for more than 5 quizzes, you can add more to your package later. Or you can change the 'Visible To' for quizzes that no longer needs to have anonymous answers recorded.
for 5 quizzes