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Topo GPS vs Avenza Maps: catalog facts
Topo GPS	Avenza Maps
Freemium Prices are not listed on the homepage; check the app stores for current costs.	Freemium Free to use, with paid plans and paid maps for extra features and content.
Android, iOS	Android, iOS
Official topographic maps that can be used offline Route planning, recording and import in GPX, KML and CSV	Works offline with pre-loaded maps Opens georeferenced PDF and GeoTIFF maps
Some formats, such as WFS and GeoJSON, are iOS only Pricing is not explained on the website	Advanced features require payment Not open source
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is 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.