Now that the immediacy of the original request has passed, and we might expect that the OP is now well on the way to SDC, I will put a plug in for my preferred mapping tool, OSMAnd from the Open Street Maps organisation. They also have an Apple version. Both use the extensive mapping collected over the years as a public domain data set. On the Android version, that includes the many walking and cycling trails in Spain and Portugal, and I presume elsewhere in Europe. It also has route planning tools that I find work well for walking, cycling and most other major transport modes. I used it extensively earlier this year when I was narrow boating in Cambridge and Norfolk, and then on the Camino do Tejo to Fatima, and the Camino Portuguese route from Tomar to SDC.
The advantage of a general mapping tool to me is that it more readily adapts to the circumstance where specialist apps like
Wise Pilgrim haven't reached. I think
Wise Pilgrim, etc are more likely to give better results on the well established routes, where the aggregation of mapping, accommodation and other useful information in one place can be a clear advantage.