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Polar Flow vs Suunto app: catalog facts
Polar Flow	Suunto app
Free Free to use with Polar devices.	Free Free to download from the App Store and Google Play.
Android, iOS, Web	Android, iOS
Syncs data from Polar watches and heart-rate monitors Available on the web and on phones	Supports Suunto watches back to the Ambit range Route creation on built-in maps
Only useful with Polar hardware Web service was under maintenance when checked	Requires an account Older watches need a USB cable and SuuntoLink to sync
Downloadable app, Web application	Downloadable app
Closed source	Closed 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 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.