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Cartes IGN vs Locus Map: catalog facts
Cartes IGN	Locus Map
Free Free to use and open source under the GPL-3.0 licence.	Freemium Free to use, with paid features available.
Android, iOS	Android, iOS
Official IGN topographic and base maps Thematic geographic data layers from IGN and partners	Offline maps and offline routing Detailed route planner with elevation and surface information
Available only in French Coverage and data focus on France	iOS gets a Lite version Many options can make it complex for casual users
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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