My iPhone app has gotten five 5-star ratings, out of which three have left a review.<p>It has also gotten <i>nine</i> 1-star ratings, out of which none has left a review. So, I have no feedback on what they don't like.<p>Is the app crashing? Is it buggy? Do they think it's useless? Do they want some feature that's missing?<p>My questions for you guys:<p>1) Is this a common problem with apps, that is, the 1-star raters are much less likely to leave a review than the other raters?<p>2) Is there anything that can be done to find out some of the reasons behind the 1-star ratings?