Callook.info vs REST Countries
Same instrument, two spec sheets — measured, not claimed.
Callook.info vs REST Countries: common questions
Which is more reliable, Callook.info or REST Countries?
Both are neck-and-neck — Callook.info and REST Countries each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.
Which is faster, Callook.info or REST Countries?
REST Countries has the lower median latency in our checks — Callook.info responds in 437 ms versus REST Countries at 328 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 Callook.info and REST Countries need an API key?
Neither needs a paid key — Callook.info is callable with no signup, and REST Countries is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Callook.info and REST Countries from the browser?
Only Callook.info is browser-friendly — it returns CORS headers over HTTPS. REST Countries needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are Callook.info and REST Countries free for commercial use?
Callook.info 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.