JamTimer - for roller derby App Reviews

The JamTimer - for roller derby app recently received 5 positive reviews on iPhone, iPad, and Android devices. Users in the United States have given JamTimer - for roller derby app an average rating of 5.00 out of 5 stars, based on a total of 8 ratings since its release on Aug 20 by Fearless Code. Can you share your positive or negative thoughts about JamTimer - for roller derby?