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Runna vs C25K: catalog facts
Runna	C25K
Paid Paid subscription with a free first week that can be cancelled at any time.	Freemium Free on iOS and Android with optional paid features.
Android, iOS	Android, iOS
Plans tailored to a specific race distance or time goal Covers goals from 5K to marathon	Simple eight-week plan aimed at beginners Audio coaching during workouts
Requires a paid subscription after the trial week Closed source commercial service	Focused only on reaching 5K Some features require payment
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
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 September 23, 2026

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