Since years I'm criss-crossing roads with my wife on our bikes, we haven't found any usefull app. I've created one, includind speedometer, GPS, choice of maps, etc. I allow myself to share it with you
Feel free to comment
It's only available on Android, sorry for that...
Here is "Speedo Master" :
Have fun riding!
If you're new please join in and if you have questions pop them below and the forum regulars will answer as best we can.