Catchdoms Security API vs Userstack
Same instrument, two spec sheets — measured, not claimed.
Catchdoms Security API vs Userstack: common questions
Which is more reliable, Catchdoms Security API or Userstack?
On our scheduled checks, Catchdoms Security API leads on measured uptime — Catchdoms Security API at 100% versus Userstack at 99.02% 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, Catchdoms Security API or Userstack?
Catchdoms Security API has the lower median latency in our checks — Catchdoms Security API responds in 437 ms versus Userstack at 443 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 Catchdoms Security API and Userstack need an API key?
Catchdoms Security API needs no key, while Userstack requires a free API key. If you want to start calling without signup, reach for Catchdoms Security API first.
Can I call Catchdoms Security API and Userstack from the browser?
Only Userstack is browser-friendly — it returns CORS headers over HTTPS. Catchdoms Security API needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are Catchdoms Security API and Userstack free for commercial use?
Catchdoms Security API has unclear commercial terms, and Userstack 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.