City, Lviv vs ONS
Same instrument, two spec sheets — measured, not claimed.
City, Lviv vs ONS: common questions
Which is more reliable, City, Lviv or ONS?
On our scheduled checks, ONS leads on measured uptime — City, Lviv at 74.5% versus ONS at 100% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Which is faster, City, Lviv or ONS?
ONS has the lower median latency in our checks — City, Lviv responds in 965 ms versus ONS at 732 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 City, Lviv and ONS need an API key?
Neither needs a paid key — City, Lviv is callable with no signup, and ONS is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call City, Lviv and ONS from the browser?
Only ONS 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 ONS free for commercial use?
City, Lviv has unclear commercial terms, and ONS 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.