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Cartes IGN vs CoMaps: catalog facts
Cartes IGN	CoMaps
Best for: Hiking, travel and map exploration in France using official IGN maps	Best for: People who want private offline navigation based on OpenStreetMap
Free Free to use and open source under the GPL-3.0 licence.	Free Free and open source, supported by donations.
Android, iOS	Android, iOS
Official IGN topographic and base maps Thematic geographic data layers from IGN and partners All 3 strengths for Cartes IGN Official IGN topographic and base maps Thematic geographic data layers from IGN and partners Free and open source	Offline search and turn-by-turn routing for foot, bike and car Outdoor mode with trails, campsites and contour lines All 4 strengths for CoMaps Offline search and turn-by-turn routing for foot, bike and car Outdoor mode with trails, campsites and contour lines Offline Wikipedia articles for points of interest Community-governed and privacy-focused
Available only in French Coverage and data focus on France	Public transport layer covers only some cities Map data quality depends on OpenStreetMap coverage in each area
Downloadable app	Downloadable app
Open source	Open 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	Offline features available
Official website Full listing and sources Sources for Cartes IGN ign.fr/telechargez-application-cartographique-cartes-ign github.com/IGNF/cartes-ign-app f-droid.org/packages/fr.ign.geoportail Catalog checked October 2, 2026	Official website Full listing and sources Sources for CoMaps comaps.app f-droid.org/packages/app.comaps.fdroid apps.apple.com/us/app/comaps/id6747180809 Catalog checked September 23, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.