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CalTopo vs onX Backcountry: catalog facts
CalTopo	onX Backcountry
Freemium Free to use with paid plans for additional features.	Paid Paid subscription with a free trial.
Android, iOS, Web	Android, iOS
Real-time collaborative editing of the same map Slope angle, snow depth, weather and public land layers	3D terrain view available offline LiDAR topo maps and slope angle shading
Many data layers focus on the United States Some features require a paid plan	Requires a paid subscription after the trial Proprietary service tied to an account
Downloadable app, Web application	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.