serpstack vs Yes No
Same instrument, two spec sheets — measured, not claimed.
serpstack vs Yes No: common questions
Which is more reliable, serpstack or Yes No?
On our scheduled checks, Yes No leads on measured uptime — serpstack at 99.02% versus Yes No 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, serpstack or Yes No?
serpstack has the lower median latency in our checks — serpstack responds in 492 ms versus Yes No at 692 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 serpstack and Yes No need an API key?
Yes No needs no key, while serpstack requires a free API key. If you want to start calling without signup, reach for Yes No first.
Can I call serpstack and Yes No from the browser?
Only Yes No is browser-friendly — it returns CORS headers over HTTPS. serpstack needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are serpstack and Yes No free for commercial use?
serpstack 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.