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Ducks Unlimited vs What3Words

Same instrument, two spec sheets — measured, not claimed.

APIDucks UnlimitedNEW—What3WordsNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Ducks Unlimited vs What3Words: common questions

Which is more reliable, Ducks Unlimited or What3Words?

On our scheduled checks, What3Words leads on measured uptime — Ducks Unlimited at —% versus What3Words at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do Ducks Unlimited and What3Words need an API key?

Ducks Unlimited needs no key, while What3Words requires a free API key. If you want to start calling without signup, reach for Ducks Unlimited first.

Can I call Ducks Unlimited and What3Words from the browser?

Only Ducks Unlimited is browser-friendly — it returns CORS headers over HTTPS. What3Words needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Ducks Unlimited and What3Words free for commercial use?

Ducks Unlimited has unclear commercial terms, and What3Words has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.