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Trackbook vs AAT Another Activity Tracker: catalog facts
Trackbook	AAT Another Activity Tracker
Free Free and open source under the MIT licence.	Free Free and open source under the GPL-3.0.
Android	Android
Simple start-and-record workflow Uses OpenStreetMap map data	Stores tracks as standard GPX files Offline maps, hill shading and offline POIs
Bare-bones by design, without training plans or detailed fitness analysis Android only	Interface is utilitarian compared with commercial trackers Offline maps must be downloaded separately
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0
Not stated if an account is needed	No account 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 October 2, 2026

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