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Polar Flow vs Bryton Active: catalog facts
Polar Flow	Bryton Active
Free Free to use with Polar devices.	Free Free to use with a Bryton bike computer.
Android, iOS, Web	Web
Syncs data from Polar watches and heart-rate monitors Available on the web and on phones	Route planning that sends routes to Bryton bike computers Training plan customization and ride analysis
Only useful with Polar hardware Web service was under maintenance when checked	Only useful with Bryton hardware Official page gives few details on supported phones
Downloadable app, Web application	Downloadable app, Web application
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.