Currencylayer vs Fixer
Same instrument, two spec sheets — measured, not claimed.
Currencylayer vs Fixer: common questions
Which is more reliable, Currencylayer or Fixer?
On our scheduled checks, Currencylayer leads on measured uptime — Currencylayer at 100% versus Fixer at 99.02% 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, Currencylayer or Fixer?
Fixer has the lower median latency in our checks — Currencylayer responds in 511 ms versus Fixer at 481 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 Currencylayer and Fixer need an API key?
Both ask you to authenticate — Currencylayer uses an API key and Fixer 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 Currencylayer and Fixer from the browser?
Only Fixer is browser-friendly — it returns CORS headers over HTTPS. Currencylayer needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are Currencylayer and Fixer free for commercial use?
Currencylayer has unclear commercial terms, and Fixer 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.