NetworkCalc vs Poptin API

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

Uptime · 30d
Uptime · 90d99.44%100%
Uptime · 30d100%100%
P50 · ms289698
P95 · ms33721705
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified
Free tierFree public API, no key
Rate limitUnpublished120 req/window · 119 remaining
In directory since2026-07-052026-10-04
operationalpartialdownno data

NetworkCalc vs Poptin API: common questions

Which is more reliable, NetworkCalc or Poptin API?

On our scheduled checks, Poptin API leads on measured uptime — NetworkCalc at 99.44% versus Poptin API at 100% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, NetworkCalc or Poptin API?

NetworkCalc has the lower median latency in our checks — NetworkCalc responds in 289 ms versus Poptin API at 698 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do NetworkCalc and Poptin API need an API key?

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

Can I call NetworkCalc and Poptin API from the browser?

Yes — both NetworkCalc and Poptin API 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 NetworkCalc and Poptin API free for commercial use?

NetworkCalc has unclear commercial terms, and Poptin API 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.