Fixer vs National Bank of Poland
Same instrument, two spec sheets — measured, not claimed.
Fixer vs National Bank of Poland: common questions
Which is more reliable, Fixer or National Bank of Poland?
On our scheduled checks, National Bank of Poland leads on measured uptime — Fixer at —% versus National Bank of Poland at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Do Fixer and National Bank of Poland need an API key?
National Bank of Poland needs no key, while Fixer requires a free API key. If you want to start calling without signup, reach for National Bank of Poland first.
Can I call Fixer and National Bank of Poland from the browser?
Yes — both Fixer and National Bank of Poland 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 Fixer and National Bank of Poland free for commercial use?
Fixer has unclear commercial terms, and National Bank of Poland 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.