Navigation is one of the most fundamental elements of planning and executing a successful outdoor trip. Thanks to phone apps, it鈥檚 also easier than ever. Of course, everyone should learn how to use a physical map and compass before heading into the backcountry, but digital maps often provide everything you need to get around safely, and many have more information and functionality than what鈥檚 available on paper. Here are three of our favorite map apps.
Cairn
Best For: Keeping Your Family in the Loop
If a map app and a satellite communications device had a lovechild, it鈥檇 be Cairn. The app () provides basic topo maps, but its hallmark feature is an alert system that allows you to notify friends and family of where you鈥檙e going and when you鈥檒l be back. It also allows them to track you as you go. Set a pin on the map for the location you鈥檙e traveling to (say, a peak, a river put-in, or a remote climb), and then select 鈥渘otify my safety circle.鈥 The app prompts you to select your estimated return time and a short note and then automatically sends it to your contacts via email or text, so long as you have cell service. It鈥檒l include a link to a map that updates with your location coordinates whenever you have cell service. You can also manually send a preset or customized message with your location coordinates to your emergency contacts. To that end, Cairn overlays its map with dots that show where previous users have and have not gotten cell coverage for various carriers so you can better predict what sort of connectivity you鈥檒l have on your route.
Of course, Cairn provides nowhere near the level of security of a sat-comm device like the , which can send an SOS signal directly to search and rescue. But equipping a few people with your exact last-known geocoordinates can make rescue efforts that much faster. The basic app is free; you get access to higher-resolution maps for a fee ($12 for three months, $15 for six months, $20 for 12 months).
OnX
Best For: Figuring Out Where You Want to Go (And Where You鈥檙e Allowed to Go)
This app doesn鈥檛 just take the place of your paper map; it鈥檚 better than your paper map (well, except for technological limitations like battery life). Aside from basic satellite weather radar, OnX () offers overlays with information on private and public land boundaries, including information about individual landowners; trails, mileages, and slopes; areas of national forests that have been logged in the past five years; nautical charts; river stage forecasts; current wildfires; and forest service maps telling you what roads are accessible by what kind of vehicle. The latter three鈥攑lus high-resolution satellite and topo maps鈥攁re free, but you鈥檒l need a premium membership ($30 per year) to access the other features.
You can also add waypoints, chart the distance between two points, calculate the area between three points, and see the exact latitude, longitude, and altitude. As with all the other apps in this roundup, OnX allows you to download maps to use when you鈥檙e offline and can track your travels, all for free.
Many of these features were designed specifically for hunting, though they鈥檙e relevant to a wide outdoors audience. Picked out a cool dispersed camping spot on forest service land but not sure if your car will make it up the road? OnX can help.
Gaia
Best For: Basic Navigation Once You Already Know Where You Want to Go
With high-quality topo maps and basic navigation features on your phone, Gaia ( and ) sits on the other end of the spectrum from OnX. It allows you to set waypoints and routes, as well as upload courses and record your travels. The free map is low quality, but the app allows users to import and export GPX files, so you can preset a route on your computer and import it to your phone or export a route you鈥檝e recorded on your phone to your computer.
For $20 a year, you get access to high-resolution topo and satellite maps; $40 per year gets you access to a library of more-specific, info-heavy maps and overlays, including National Geographic Trails Illustrated, U.S. Motor Vehicle Use Maps, and U.S. Private Land Ownership maps. You won鈥檛 get as much detailed info as OnX (like satellite weather overlays, river reports, or recent timber cuts), but if you鈥檙e just looking to remain aware of where you are relative to your destination, Gaia鈥檚 all you need.