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?
Only REST Countries is on our probe schedule so far (—% uptime over 90 days). The other is catalogued but not yet live-checked, so we can't compare measured reliability head-to-head — check the uncovered API's own status page for now.
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.