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AAT Another Activity Tracker vs Trailence: catalog facts
AAT Another Activity Tracker	Trailence
Free Free and open source under the GPL-3.0.	Free Free and open source under the Apache-2.0 licence, with no ads.
Android	Android, Web
Stores tracks as standard GPX files Offline maps, hill shading and offline POIs	Records, plans and organizes GPS tracks in one app Offline maps for use without coverage
Interface is utilitarian compared with commercial trackers Offline maps must be downloaded separately	No iOS app mentioned Little documentation available on the homepage
Downloadable app	Downloadable app, Web application
Open source	Open source
License: GPL-3.0	License: Apache-2.0
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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