Arbeitnow vs caldays
Same instrument, two spec sheets — measured, not claimed.
Arbeitnow vs caldays: common questions
Which is more reliable, Arbeitnow or caldays?
On our scheduled checks, caldays leads on measured uptime — Arbeitnow at 93.1% versus caldays 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, Arbeitnow or caldays?
caldays has the lower median latency in our checks — Arbeitnow responds in 303 ms versus caldays at 149 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 Arbeitnow and caldays need an API key?
Neither needs a paid key — Arbeitnow is callable with no signup, and caldays is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Arbeitnow and caldays from the browser?
Yes — both Arbeitnow and caldays 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 Arbeitnow and caldays free for commercial use?
Arbeitnow has unclear commercial terms, and caldays 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.