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FastApi Simple Calculator vs SiteIntel

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

APIFastApi Simple CalculatorNEW—SiteIntelNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

FastApi Simple Calculator vs SiteIntel: common questions

Which is more reliable, FastApi Simple Calculator or SiteIntel?

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

FastApi Simple Calculator needs no key, while SiteIntel 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 SiteIntel from the browser?

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

Are FastApi Simple Calculator and SiteIntel free for commercial use?

FastApi Simple Calculator has unclear commercial terms, and SiteIntel 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.