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NetworkCalc vs SEO Score

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

APINetworkCalcHEALTHY91SEO ScoreHEALTHY91
Uptime · 30d
Uptime · 90d99.02%100%
Uptime · 30d98.3%100%
P50 · ms448634
P95 · ms39761704
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree public API, no keyFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

NetworkCalc vs SEO Score: common questions

Which is more reliable, NetworkCalc or SEO Score?

On our scheduled checks, SEO Score leads on measured uptime — NetworkCalc at 99.02% versus SEO Score 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 SEO Score?

NetworkCalc has the lower median latency in our checks — NetworkCalc responds in 448 ms versus SEO Score at 634 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 SEO Score need an API key?

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

Can I call NetworkCalc and SEO Score from the browser?

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

Are NetworkCalc and SEO Score free for commercial use?

NetworkCalc has unclear commercial terms, and SEO Score 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.