| Device | Upfront | Fee per year | 3-year total | 5-year total |
|---|---|---|---|---|
| DuckDik Sense | 89 € | — | 89 € | 89 € |
| DuckDik Sense Pro | 129 € | — | 129 € | 129 € |
| Fitbit Air + Health Premium | 99,99 € | 107,88 € | 396,66 € | 612,42 € |
| Amazfit Helio Strap | 99,90 € | — | 99,90 € | 99,90 € |
| Oura Ring 4 + membership | 399 € | 69,99 € | 608,97 € | 748,95 € |
| WHOOP One | 0 € | 199 € | 597 € | 995 € |
| WHOOP Peak | 0 € | 264 € | 792 € | 1.320 € |
| WHOOP Life | 0 € | 399 € | 1.197 € | 1.995 € |
We add the purchase price and each year's fee (annual plan where one exists; otherwise 12 monthly payments). Free trial months are deducted in year one. No one-off deals, straps or accessories. Prices from each brand's official Spanish store, checked on 25 September 2026. Prices can change. DuckDik is not affiliated with any of these brands; they are named for comparison only.
WHOOP One / Peak / Life (join.whoop.com, 30-sep-2026) · Fitbit Air · Google Health Premium · Health Premium (Google Italia) · Amazfit Helio Strap · Oura Ring 4 · Oura membership · WHOOP membership
See also: full comparison with Fitbit Air, Amazfit, Oura and WHOOP
Because WHOOP doesn't sell the band on its own: it comes with the mandatory annual membership. The cost is the fee.
Yes, but its AI coach, trends and adaptive plans sit in Google Health Premium, which is paid after a 3-month trial. The calculator includes it by default; you can switch it off.
No. The DuckDik Sense (€89) and Sense Pro (€129) include everything, including the AI coach that builds and adjusts your plan inside the app.
The DuckDik Sense lasts up to 45 days per charge; the others, 5 to 14 days. It doesn't cost money, but it costs chargers.
DuckDik is a wellness product, not a medical device: it does not diagnose, treat or prevent any disease.