TrailGauge is the off-road companion that turns your phone into a backcountry gauge cluster — pitch and roll, grade-colored route logging, live fire and weather alerts. Then mails a real postcard from wherever you stopped.
Most trail apps draw a line on a map. TrailGauge reads the terrain itself — the angles, the grade, the conditions — for people who actually leave the pavement.
TrailGauge is a mobile trail app for off-roaders, overlanders, and backcountry explorers. It combines a real-time pitch-and-roll inclinometer, grade-colored route logging, and live wildfire and weather alerts into one tool built for the trail.
Whether you're crawling a rocky climb or logging a dispersed-camping route, it keeps the data you care about in front of you — and lets you turn the trip into something physical you can hold and mail. Fire and weather alerts are always free, and never behind a paywall.
Two things: physical postcards we print and mail for you, and a Pro subscription that unlocks the full instrument.
Turn a trip into a real postcard — printed with your photo, your route's GPS coordinates, and a custom message — that we print and mail anywhere in the US for you.
Unlocks premium features including grade-colored route history, advanced trip tools, and more. Cancel anytime.
From the trail to a mailbox — or to the full instrument — in a few taps.
Open TrailGauge and drive. It logs your grade, angles, and route as you go.
Order postcards as a one-time purchase, or subscribe to Pro for the full feature set — right in the app.
Your postcard is printed and mailed through our fulfillment partner, straight to whoever you choose.