Exchangerate.host vs Frankfurter
Same instrument, two spec sheets — measured, not claimed.
Exchangerate.host vs Frankfurter: common questions
Which is more reliable, Exchangerate.host or Frankfurter?
On our scheduled checks, Exchangerate.host leads on measured uptime — Exchangerate.host at 99.02% versus Frankfurter at 88.2% 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, Exchangerate.host or Frankfurter?
Frankfurter has the lower median latency in our checks — Exchangerate.host responds in 398 ms versus Frankfurter at 370 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 Exchangerate.host and Frankfurter need an API key?
Neither needs a paid key — Exchangerate.host is callable with no signup, and Frankfurter is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Exchangerate.host and Frankfurter from the browser?
Yes — both Exchangerate.host and Frankfurter 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 Exchangerate.host and Frankfurter free for commercial use?
Exchangerate.host has unclear commercial terms, and Frankfurter allows commercial use on its free tier. 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.