I've been looking at mapping apps to use on my phone so I know where I'm going if I ever decide to venture off the safety of the towpath. I looked for all the best free apps available and had a quick play with them to see which is most suitable for my needs.
The apps I found were: Maps 3D Lite, Bike Hub, Bike Brain and Cycle Streets. I already had Strava after the earlier recommendation.
Bike Brain seems to be more of a fitness based app similar to strava. You can log trips, see what speed you're travelling and compare previous times from the same distances. Very useful for training but not much of a navigation tool as it plots where you are and not where you need to go.
Maps 3D does exactly what it says on the tin. Basically a 2d map but with added contours showing the various heights along the route. Route planning is available but not on the free version.
Cycle Streets has a mapping service very similar to google maps where it includes all the cycle networks and can plan a route for you but gives the information in a turn by turn list format, Not sure how useful this would be while trying to ride even with the phone mounted to the handlebars. Routes can be chosen by fastest, shortest, quietest or balanced combining all features.
Finally the last app I have had a quick play with was Bike Hub. Like with Cycle Streets it has a full mapping service and route planning where different routes can be planned depending on if you are looking for the quickest or shortest. The balanced option automatically routes away from hills where possible. A second map view shows the elevation changes along the route as well.
You can save routes as well and download the maps required for a route before leaving your house, very useful for cycling in areas with no internet coverage.
I left one of the best features of this app till almost the end. It actually has turn by turn audio navigation similar to the ones you find in most car navigation systems. How this performs while riding I don't know yet but will give it a go once I pick up my bike.
I've saved the best feature though till last, you can select points of interest along the route, it has cycle shops plus the usual tourist spots but most importantly you can search for all pubs along the route. It's a clear winner in my book!