FastApi Simple Calculator vs ListLoco API

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

Uptime · 30d
Uptime · 90d96.1%100%
Uptime · 30d95.0%100%
P50 · ms315127
P95 · ms778443
Authnonenone
CORSnono
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 ListLoco API: common questions

Which is more reliable, FastApi Simple Calculator or ListLoco API?

On our scheduled checks, ListLoco API leads on measured uptime — FastApi Simple Calculator at 96.1% versus ListLoco API 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 ListLoco API?

ListLoco API has the lower median latency in our checks — FastApi Simple Calculator responds in 315 ms versus ListLoco API at 127 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 ListLoco API need an API key?

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

Can I call FastApi Simple Calculator and ListLoco API from the browser?

Neither sends browser-friendly CORS headers reliably, so call FastApi Simple Calculator and ListLoco API 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 ListLoco API free for commercial use?

FastApi Simple Calculator has unclear commercial terms, and ListLoco API 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.