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AlpineQuest vs OpenTopoMap Viewer: catalog facts
AlpineQuest	OpenTopoMap Viewer
Freemium A free version is available alongside a paid full version on Google Play.	Free Free and open source under the Apache 2.0 licence.
Android	Android
Caches online topo maps for use without coverage Supports file-based maps such as MemoryMap	Topographic maps with contour detail GPX import and display
Android only, with no iOS version No technical support on LineageOS or /e/OS	Online client that needs a connection for new areas Android only
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: Apache-2.0
Not stated if an account is needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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