NetworkCalc vs ReqRes
Same instrument, two spec sheets — measured, not claimed.
NetworkCalc vs ReqRes: common questions
Which is more reliable, NetworkCalc or ReqRes?
On our scheduled checks, ReqRes leads on measured uptime — NetworkCalc at 99.02% versus ReqRes 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, NetworkCalc or ReqRes?
ReqRes has the lower median latency in our checks — NetworkCalc responds in 448 ms versus ReqRes at 256 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 NetworkCalc and ReqRes need an API key?
Neither needs a paid key — NetworkCalc is callable with no signup, and ReqRes is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call NetworkCalc and ReqRes from the browser?
Only NetworkCalc is browser-friendly — it returns CORS headers over HTTPS. ReqRes needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are NetworkCalc and ReqRes free for commercial use?
NetworkCalc has unclear commercial terms, and ReqRes 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.