FinSignals API vs Nager.Date
Same instrument, two spec sheets — measured, not claimed.
FinSignals API vs Nager.Date: common questions
Which is more reliable, FinSignals API or Nager.Date?
Both are neck-and-neck — FinSignals API and Nager.Date each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.
Which is faster, FinSignals API or Nager.Date?
Nager.Date has the lower median latency in our checks — FinSignals API responds in 312 ms versus Nager.Date at 56 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 FinSignals API and Nager.Date need an API key?
Neither needs a paid key — FinSignals API is callable with no signup, and Nager.Date is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call FinSignals API and Nager.Date from the browser?
Yes — both FinSignals API and Nager.Date send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.
Are FinSignals API and Nager.Date free for commercial use?
FinSignals API has unclear commercial terms, and Nager.Date 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.