Yes, we would always suggest that you take a map with you and not rely completely on either the iFootpath App or a printed copy of the walk.
To help a little we have placed a link at the bottom of the walks on the website to take you to a range of maps for the walk area that you are looking for available through Amazon. You can even buy a used copy at a discount from Amazon. Just click on the link and you will be taken to a page of maps for that area. But please double check to make sure that the map you want to buy covers all the walks you want to do.