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Things 3 vs todometer: catalog facts
Things 3	todometer
Paid One-time purchase, priced separately for Mac, iPhone and iPad.	Free Free and open source.
macOS, iOS	macOS
Clean, well-regarded design Quick to learn	Progress meter as positive reinforcement Pause items without deleting them
Apple platforms only Each platform version is bought separately	Deliberately minimal, no projects or due dates mentioned Installed from GitHub releases
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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