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