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FastApi Simple Calculator vs SLA Uptime Calculator

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

APIFastApi Simple CalculatorHEALTHY93SLA Uptime CalculatorHEALTHY82
Uptime · 30d
Uptime · 90d96.1%100%
Uptime · 30d95.0%100%
P50 · ms3151373
P95 · ms7782741
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

FastApi Simple Calculator vs SLA Uptime Calculator: common questions

Which is more reliable, FastApi Simple Calculator or SLA Uptime Calculator?

On our scheduled checks, SLA Uptime Calculator leads on measured uptime — FastApi Simple Calculator at 96.1% versus SLA Uptime Calculator 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, FastApi Simple Calculator or SLA Uptime Calculator?

FastApi Simple Calculator has the lower median latency in our checks — FastApi Simple Calculator responds in 315 ms versus SLA Uptime Calculator at 1373 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 FastApi Simple Calculator and SLA Uptime Calculator need an API key?

Neither needs a paid key — FastApi Simple Calculator is callable with no signup, and SLA Uptime Calculator is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call FastApi Simple Calculator and SLA Uptime Calculator from the browser?

Only SLA Uptime Calculator 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 SLA Uptime Calculator free for commercial use?

FastApi Simple Calculator has unclear commercial terms, and SLA Uptime Calculator 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.