App needs to be updated – WaveRider Mobile App Review

I just got this app today and when I opened it it gave me an error message saying this app isn't compatible with my current iOS 11 version and the owner of this app needs to update it for me to use it. Hopefully this gets done soon. If not then I'm stuck to keeping track of the time instead of relying on a app. :/
Review by Matthew77888221 on WaveRider Mobile App.