City, Gdańsk vs EPA
Same instrument, two spec sheets — measured, not claimed.
City, Gdańsk vs EPA: common questions
Which is more reliable, City, Gdańsk or EPA?
On our scheduled checks, EPA leads on measured uptime — City, Gdańsk at —% versus EPA 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 City, Gdańsk and EPA need an API key?
Neither needs a paid key — City, Gdańsk is callable with no signup, and EPA is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call City, Gdańsk and EPA from the browser?
Yes — both City, Gdańsk and EPA 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 City, Gdańsk and EPA free for commercial use?
City, Gdańsk has unclear commercial terms, and EPA 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.