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C25K vs Zombies, Run!: catalog facts
C25K	Zombies, Run!
Freemium Free on iOS and Android with optional paid features.	Freemium Free to start, with a paid Pro mode and gift codes for purchase.
Android, iOS	Android, iOS
Simple eight-week plan aimed at beginners Audio coaching during workouts	Story missions make runs less repetitive Works at any pace, including walking
Focused only on reaching 5K Some features require payment	Custom workouts need the paid Pro mode Less suited to detailed training analysis
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.