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positionstack vs Zippopotam.us

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

APIpositionstackNEW—Zippopotam.usNEW—
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 — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

positionstack vs Zippopotam.us: common questions

Which is more reliable, positionstack or Zippopotam.us?

On our scheduled checks, Zippopotam.us leads on measured uptime — positionstack at —% versus Zippopotam.us 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 positionstack and Zippopotam.us need an API key?

Zippopotam.us needs no key, while positionstack requires a free API key. If you want to start calling without signup, reach for Zippopotam.us first.

Can I call positionstack and Zippopotam.us from the browser?

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

Are positionstack and Zippopotam.us free for commercial use?

positionstack has unclear commercial terms, and Zippopotam.us 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.