Hiking safety app Cairn is creating a cell coverage map for the wilderness – GeekWire
Hiking safety app Cairn is creating a cell coverage map for the wildernessGeekWireCairn, a new iOS app from Trover and Expedia veterans Ali Alami and Tove Martin, lets you easily enter the details of your hike, whether it's a three day climb up Mt. Rainier or a half-day trip up to Hurricane Ridge, and keeps your friends and family …
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