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Numverify vs QuickChart

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

APINumverifyNEW—QuickChartNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnono
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

Numverify vs QuickChart: common questions

Which is more reliable, Numverify or QuickChart?

On our scheduled checks, QuickChart leads on measured uptime — Numverify at —% versus QuickChart 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 Numverify and QuickChart need an API key?

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

Can I call Numverify and QuickChart from the browser?

Neither sends browser-friendly CORS headers reliably, so call Numverify and QuickChart from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Numverify and QuickChart free for commercial use?

Numverify has unclear commercial terms, and QuickChart 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.