Trailmonger vs Gaia GPS
Gaia GPS is one of the longest-running backcountry navigation apps, with a deep catalog of more than 300 map layers and worldwide coverage, now sold as part of the Outside+ family. Trailmonger is an offline-first adventure map for the United States: the map itself works with no signal for free, and Pro adds property boundaries with owner names, hunt units, real-time stream flow, bathymetry, and tides. Here is where each one is genuinely better.
| Feature | Trailmonger | Gaia GPS |
|---|---|---|
| Paid tier | Pro — $19.99/year or $3.99/month | Premium — $59.90/year; Outside+ bundle — $89.99/year |
| Free tier | Full map, unlimited offline downloads, GPS recording, safety layers, 10 waypoints | Route planning, GPS recording, and navigation with a connection |
| Offline maps | Free and unlimited; downloads never expire | Requires Premium |
| Property lines & owners | Included in Pro — 45 states, from state and county open records | Private Land layer included with Premium |
| Fishing & paddling data | Real-time stream flow, bathymetry, and tides | Not offered |
| Map layers | Per-activity presets — hike, hunt, fish, paddle, bike, run, off-road | 300+ layers across terrain, weather, and land status |
| Coverage area | United States | Worldwide |
| Platforms | iPhone, Android, and web | iPhone, Android, and web |
Gaia GPS pricing and features verified August 2026 from public sources; both change over time — check their site for current details.
How much does each app cost?
Trailmonger Pro is $19.99 per year (or $3.99 per month). Gaia GPS Premium is $59.90 per year after a 14-day trial, and the Outside+ bundle — which adds Trailforks Pro and Outside’s publications — is $89.99 per year. The bigger practical difference sits in the free tiers: Trailmonger’s offline maps are free and unlimited, while Gaia puts offline downloads behind Premium.
What does Gaia GPS do better?
Layer depth and reach. Gaia’s catalog of 300+ layers — historic topo series, snow and avalanche data, MVUM and land-management overlays, and its own Gaia Hike and Gaia Overland basemaps — is the broadest in the category, and it covers the whole world where Trailmonger is United States only. (Two things often listed here are not actually gaps: Trailmonger has slope, aspect and hillshade terrain layers, and cell coverage for all major carriers.) Overlanders in particular get a purpose-built map, and the Outside+ bundle folds in Trailforks Pro for mountain bikers. If you travel internationally or want the biggest possible layer library, Gaia is the stronger pick.
What does Trailmonger do better?
Price, and working without paying. Offline maps — the core reason to buy Gaia Premium — are free and unlimited in Trailmonger, and Pro costs a third of Premium. Trailmonger also carries water data Gaia does not: real-time stream flow for anglers and paddlers, lake bathymetry, and tides. Property boundaries come with owner names from state and county open records, and hunt units sit on the same map as everything else.
Is Trailmonger a good Gaia GPS alternative?
Yes, if you adventure in the United States and want offline maps without a subscription — or land ownership, hunting, and fishing data at a lower price. Gaia remains the better pick for international trips and for its sheer breadth of map layers. The FAQ covers what is in the free tier and how offline maps work.