DownStatus vs SLA Uptime Calculator
Same instrument, two spec sheets — measured, not claimed.
DownStatus vs SLA Uptime Calculator: common questions
Which is more reliable, DownStatus or SLA Uptime Calculator?
On our scheduled checks, SLA Uptime Calculator leads on measured uptime — DownStatus at 60.8% versus SLA Uptime Calculator 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, DownStatus or SLA Uptime Calculator?
DownStatus has the lower median latency in our checks — DownStatus responds in 589 ms versus SLA Uptime Calculator at 1373 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 DownStatus and SLA Uptime Calculator need an API key?
Neither needs a paid key — DownStatus is callable with no signup, and SLA Uptime Calculator is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call DownStatus and SLA Uptime Calculator from the browser?
Only SLA Uptime Calculator is browser-friendly — it returns CORS headers over HTTPS. DownStatus needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are DownStatus and SLA Uptime Calculator free for commercial use?
DownStatus has unclear commercial terms, and SLA Uptime Calculator 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.