After some cycling routes, I did all the Ev12, part of Ev6, Ev3, Ev8.

My main navigator tool was paper maps. 

Finally, I made an app with all available tracks or alternative path.

It is my  contribution.

Only android, for the moment.

If you want, enjoy it. You can find it :

https://eurovelomeetingpoint.com/app-tracks-with-navigator/

Or look for in play store: eurovelomeetingpoint.