Mossback

Mossback is a hiking and fishing planner that works without cell service, starting with Shenandoah National Park and the George Washington National Forest. Trails, hikes, parking, rules and elevation are built in, so it all still works when your signal drops at the trailhead.

FIND EVERY HIKE • 339 hikes in the park, from Old Rag and Whiteoak Canyon to the loops, backpacking circuits and A.T. sections people actually do, plus all 372 named park trails • 244 hikes and 228 trails in the George Washington National Forest and along the Blue Ridge Parkway • Places with several routes, like Old Rag, show them side by side • Find a hike: waterfalls, views, summits, swimming holes, rock formations, caves, fire towers, history, springs, creeks and camping, plus loops, scrambles, quiet trails, dogs and kids • What's on this hike: every falls, view, cave and ruin along the way, and how far in

BUILD MY HIKE • Pick what you want to see, like a waterfall, a view and a swimming hole, or places by name, and get real hikes on the trails from a real trailhead • Choose a loop or an out and back, a length like 5 to 10 miles, and a climb limit • Dogs with you? It keeps to the trails where dogs are allowed • Honest answers: if no one hike has it all, it says so and shows the closest ones • Plan an overnight, too: it finds a real hut, shelter, cabin or campground for the night and splits the miles between two days • See the climb on the map, then save it or start it • Good right now: this month's best hikes, and a heads-up when the streams are running high and the falls are at their best

PLAN A HIKE YOU CAN FINISH • Plan your own hike: tap waypoints and the route follows the trails, with distance, climb and time • Search the map for over 800 places, from waterfalls and summits to caves, rock formations, old homesites and springs • "Can I finish before dark?" and door-to-door timing with Apple Maps drive time • Know before you go: the Old Rag ticket, closed trails, trails where dogs aren't allowed, busy trailheads, scrambles, hunting seasons and weather hazards • Water on the way, junctions you'll pass, best time of year, and a packing list from the forecast • Stars: when it's dark, where the moon is, and the best hours for a sunset hike or a night out • Save hikes, mark them done, earn badges, and see your next one on a home screen widget

NAVIGATE ON THE TRAIL • Live navigation with your progress and a route picture on the lock screen • Off-course and turnaround alerts, plus the next water and next junction • Waypoints for campsites, water, views, cell signal and more, with your notes and photos

STAY SAFE • Text your plan to your people in one tap, with when to call for help, and "back safe" when you're done • SOS card: coordinates, trail, nearest lot, milepost, ER and ranger office, updating as you move, all without signal

FISHING MODE • 69 public spots around DC and the park's trout streams, each with its license and limits • Tides, live water temperature and Virginia trout stocking • Feeding windows, moon and solunar times, a monthly hatch chart, species ID, knots and eating advisories • Log every catch with the bait or lure that worked; see your trends

RECORD AND LEARN • Record hikes with GPS, even locked, with a battery saver for long days • Share a picture, rate it, and watch your stats grow • Import and export GPX, and export all your data

WORKS OFFLINE • Download the whole park, a district, your saved hikes, or a square on the map. See what's already downloaded; nothing downloads twice • Four map styles: Hiking, Topo, Satellite and USGS Topo • Everything but live weather, gauges, water temperature, stocking and hike photos is built in

PRIVATE BY DESIGN • No account, no ads, no analytics, no tracking. Your data stays on your phone.

Rules and safety information are for reference only. Always check current conditions and official sources. Mossback is not affiliated with the National Park Service or the U.S. Forest Service.

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