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What3Words vs Country.is

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

APIWhat3WordsUNMONITORED—Country.isNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree, no API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

What3Words vs Country.is: common questions

Which is more reliable, What3Words or Country.is?

Only Country.is is on our probe schedule so far (—% uptime over 90 days). The other is catalogued but not yet live-checked, so we can't compare measured reliability head-to-head — check the uncovered API's own status page for now.

Do What3Words and Country.is need an API key?

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

Can I call What3Words and Country.is from the browser?

Only Country.is 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 What3Words and Country.is free for commercial use?

What3Words has unclear commercial terms, and Country.is 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.