Fixer API vs RestoSignals
Same instrument, two spec sheets — measured, not claimed.
Fixer API vs RestoSignals: common questions
Which is more reliable, Fixer API or RestoSignals?
On our scheduled checks, RestoSignals leads on measured uptime — Fixer API at 99.44% versus RestoSignals 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, Fixer API or RestoSignals?
Fixer API has the lower median latency in our checks — Fixer API responds in 286 ms versus RestoSignals at 748 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 Fixer API and RestoSignals need an API key?
Both ask you to authenticate — Fixer API uses an API key and RestoSignals uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.
Can I call Fixer API and RestoSignals from the browser?
Neither sends browser-friendly CORS headers reliably, so call Fixer API and RestoSignals from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.
Are Fixer API and RestoSignals free for commercial use?
Fixer API has unclear commercial terms, and RestoSignals 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.