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ItsThisForThat vs QuickChart

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

APIItsThisForThatNEW—QuickChartNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublished (docs ask you not to hammer it)Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

ItsThisForThat vs QuickChart: common questions

Which is more reliable, ItsThisForThat or QuickChart?

On our scheduled checks, QuickChart leads on measured uptime — ItsThisForThat 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 ItsThisForThat and QuickChart need an API key?

Neither needs a paid key — ItsThisForThat is callable with no signup, and QuickChart is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call ItsThisForThat and QuickChart from the browser?

Neither sends browser-friendly CORS headers reliably, so call ItsThisForThat 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 ItsThisForThat and QuickChart free for commercial use?

ItsThisForThat 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.