A teenager who was murdered in Michigan had a fitness app on her phone that helped investigators strengthen the case against the accused, police shared. April Millsap was murdered on the morning of July 24, 2014, in Armada when she was out walking her dog, People reported. Millsap sent a message during the walk to her boyfriend which read, “I think I almost got kidnapped omfg,” People reported. Millsap got hit over her head with a motorcycle helmet, stomped on, and beaten to death, during an attempted sexual assault, Detroit Free Press reported. Authorities believe that the perpetrator killed …