Lots of crashes on IOS 10.1.1 – TrailMix Pro – Run with Music Review

I usually have the app running on a particular pace, but it tends to crash periodically during my run. I see it hasn't been updated since 2015. Are there any plans to put out an update for the new IOS? Is this a dead product?
Review by TickedInNC on TrailMix Pro – Run with Music.