# How Keely compares.

> https://meetkeely.com/compare · Updated 2026-09-28 · Keely, by Metrica Fit LLC

**The Polar Loop with Keely is a way to get recovery, training load, stress and sleep scores without a subscription.** These pages compare it with WHOOP, Oura and Polar’s own app, Polar Flow: what each costs, what each measures, and what each does that Keely doesn’t.

## The comparisons

- [WHOOP](https://meetkeely.com/compare/whoop): The Polar Loop with the free Keely app, compared with WHOOP: cost, Recovery, Strain and Load, stress, sleep and your data. Checked September 28, 2026.
- [Oura](https://meetkeely.com/compare/oura): The Polar Loop with the free Keely app, compared with the Oura Ring: cost, Readiness and Recovery, stress, sleep, sensors and data. Checked September 28, 2026.
- [Polar Flow](https://meetkeely.com/compare/polar-flow): Two free apps for the same band. How Keely compares with Polar Flow for the Polar Loop: Recovery and Nightly Recharge, Load, stress, sleep, data and switching.

## How we write them

- **Facts come from the source.** Everything about another product comes from its maker’s own pages, with the date we checked. Prices and features change, so check theirs before you buy.
- **Fair both ways.** Each comparison says where the other product does more than Keely.
- **Names, not endorsements.** We name other products only to compare them. Keely isn’t affiliated with or endorsed by WHOOP, Oura or Polar.

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