City, Lviv vs Data USA
Same instrument, two spec sheets — measured, not claimed.
City, Lviv vs Data USA: common questions
Which is more reliable, City, Lviv or Data USA?
On our scheduled checks, Data USA leads on measured uptime — City, Lviv at —% versus Data USA 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, Lviv and Data USA need an API key?
Neither needs a paid key — City, Lviv is callable with no signup, and Data USA is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call City, Lviv and Data USA from the browser?
Only Data USA is browser-friendly — it returns CORS headers over HTTPS. City, Lviv needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are City, Lviv and Data USA free for commercial use?
City, Lviv has unclear commercial terms, and Data USA 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.