ISRO vs Noctua
Same instrument, two spec sheets — measured, not claimed.
ISRO vs Noctua: common questions
Which is more reliable, ISRO or Noctua?
On our scheduled checks, ISRO leads on measured uptime — ISRO at 100% versus Noctua at 97.2% 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, ISRO or Noctua?
ISRO has the lower median latency in our checks — ISRO responds in 332 ms versus Noctua at 517 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 ISRO and Noctua need an API key?
Neither needs a paid key — ISRO is callable with no signup, and Noctua is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call ISRO and Noctua from the browser?
Only ISRO is browser-friendly — it returns CORS headers over HTTPS. Noctua needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are ISRO and Noctua free for commercial use?
ISRO has unclear commercial terms, and Noctua 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.