CalTopo offers free accounts to all users, which include a ton of features! However CalTopo also offers more map layers, advanced tools, larger PDFs, and offline functionality on a yearly subscription basis. Our subscriptions are easy to cancel and are fully refundable if you are not pleased with the product. CalTopo also offers free and discounted subscriptions to first responders and team accounts for a variety of different organizations.
CalTopo Blog

Maps and Tracks: Accuracy, Precision, and your Phone GPS (Part 2)

GPS Accuracy and Tracking Oftentimes, people write in asking about differences in our reported data on how long a particular hike should be versus how the distances they traveled were in their own experience on the trail. So I set out to gather data about why this could be.  First of all, let’s take a […]