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ip.app vs Proweblook IP Checker

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

APIip.appNEW—Proweblook IP CheckerREACHABLE—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

ip.app vs Proweblook IP Checker: common questions

Which is more reliable, ip.app or Proweblook IP Checker?

On our scheduled checks, Proweblook IP Checker leads on measured uptime — ip.app at —% versus Proweblook IP Checker 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 ip.app and Proweblook IP Checker need an API key?

ip.app needs no key, while Proweblook IP Checker requires a free API key. If you want to start calling without signup, reach for ip.app first.

Can I call ip.app and Proweblook IP Checker from the browser?

Yes — both ip.app and Proweblook IP Checker send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are ip.app and Proweblook IP Checker free for commercial use?

ip.app has unclear commercial terms, and Proweblook IP Checker 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.