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TrainerDay vs Zwift: catalog facts
TrainerDay	Zwift
Best for: Cyclists who want structured interval training on a budget	Best for: Indoor cyclists who want social riding and racing in a virtual world
Free + paid options Free tier available; subscription is $4.99 a month or $3.33 a month billed annually.	Paid Requires an annual or monthly membership.
Android, iOS	Windows, macOS, Android, iOS
More than 40,000 structured workouts Flexible plan building for indoor and outdoor riding All 4 strengths for TrainerDay More than 40,000 structured workouts Flexible plan building for indoor and outdoor riding Low subscription price Useful free tier without a credit card	Large community with group rides and racing Training plans for structured workouts All 4 strengths for Zwift Large community with group rides and racing Training plans for structured workouts Supports both cycling and running Available on desktop and mobile
Full features require a subscription Focused on cycling rather than general fitness	Membership fee required Needs a smart trainer or smart bike for cycling
Downloadable app	Downloadable app, Hosted service
Not open source	Not open source
License not stated	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Sources for TrainerDay trainerday.com Catalog checked September 24, 2026	Official website Full listing and sources Sources for Zwift zwift.com apps.apple.com/us/app/zwift-indoor-cycling-fitness/id113465… Catalog checked September 23, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.