DownStatus vs Userstack
Same instrument, two spec sheets — measured, not claimed.
DownStatus vs Userstack: common questions
Which is more reliable, DownStatus or Userstack?
On our scheduled checks, Userstack leads on measured uptime — DownStatus at —% versus Userstack 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 DownStatus and Userstack need an API key?
DownStatus needs no key, while Userstack requires a free API key. If you want to start calling without signup, reach for DownStatus first.
Can I call DownStatus and Userstack from the browser?
Yes — both DownStatus and Userstack 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 DownStatus and Userstack free for commercial use?
DownStatus 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.