Fixer API vs REST Countries
Same instrument, two spec sheets — measured, not claimed.
Fixer API vs REST Countries: common questions
Which is more reliable, Fixer API or REST Countries?
On our scheduled checks, REST Countries leads on measured uptime — Fixer API at 99.44% versus REST Countries 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 REST Countries?
REST Countries has the lower median latency in our checks — Fixer API responds in 286 ms versus REST Countries at 274 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 REST Countries need an API key?
REST Countries needs no key, while Fixer API requires a free API key. If you want to start calling without signup, reach for REST Countries first.
Can I call Fixer API and REST Countries from the browser?
Only REST Countries is browser-friendly — it returns CORS headers over HTTPS. Fixer API needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are Fixer API and REST Countries free for commercial use?
Fixer API has unclear commercial terms, and REST Countries 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.