Cartes.io vs Ducks Unlimited
Same instrument, two spec sheets — measured, not claimed.
Cartes.io vs Ducks Unlimited: common questions
Which is more reliable, Cartes.io or Ducks Unlimited?
Both are neck-and-neck — Cartes.io and Ducks Unlimited each measure 99.02% 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, Cartes.io or Ducks Unlimited?
Cartes.io has the lower median latency in our checks — Cartes.io responds in 612 ms versus Ducks Unlimited at 832 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 Cartes.io and Ducks Unlimited need an API key?
Neither needs a paid key — Cartes.io is callable with no signup, and Ducks Unlimited is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Cartes.io and Ducks Unlimited from the browser?
Yes — both Cartes.io and Ducks Unlimited 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 Cartes.io and Ducks Unlimited free for commercial use?
Cartes.io has unclear commercial terms, and Ducks Unlimited 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.