Cairn

Cairn is your personal hiking trail logbook and reusable gear-checklist builder, built for people who love being on the trail and want to remember every step of it. Log each hike with the details that matter: trail name, distance, elevation gain, duration, difficulty, trail condition, your own star rating, and free-form notes about wildlife, views, or what to pack differently next time.

Your Trailhead home screen turns those logs into a living elevation ridge that fills toward a distance goal you set yourself, alongside lifetime totals for distance climbed, hikes logged, and elevation gained. Browse your full Logbook, filter by difficulty, and sort by recent, distance, or rating to relive your best days out.

Build reusable packing checklists for day hikes, winter treks, or overnighters, then tick items off before you head out and reset them for the next trip. Switch between kilometers and miles, pick a light or dark theme, and keep everything organized your way.

Cairn is fully offline. There are no ads, no accounts, no tracking, and no in-app purchases. Your trail memories stay on your device, ready whenever you are.