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FastApi Simple Calculator vs Supadata

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

APIFastApi Simple CalculatorNEW—SupadataNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnoyes
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

FastApi Simple Calculator vs Supadata: common questions

Which is more reliable, FastApi Simple Calculator or Supadata?

On our scheduled checks, Supadata leads on measured uptime — FastApi Simple Calculator at —% versus Supadata 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 FastApi Simple Calculator and Supadata need an API key?

FastApi Simple Calculator needs no key, while Supadata requires a free API key. If you want to start calling without signup, reach for FastApi Simple Calculator first.

Can I call FastApi Simple Calculator and Supadata from the browser?

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

Are FastApi Simple Calculator and Supadata free for commercial use?

FastApi Simple Calculator has unclear commercial terms, and Supadata 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.