Arbeitnow vs PostStack
Same instrument, two spec sheets — measured, not claimed.
Arbeitnow vs PostStack: common questions
Which is more reliable, Arbeitnow or PostStack?
On our scheduled checks, PostStack leads on measured uptime — Arbeitnow at 93.1% versus PostStack 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 PostStack?
Arbeitnow has the lower median latency in our checks — Arbeitnow responds in 303 ms versus PostStack at 1066 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 PostStack need an API key?
Arbeitnow needs no key, while PostStack requires a free API key. If you want to start calling without signup, reach for Arbeitnow first.
Can I call Arbeitnow and PostStack from the browser?
Only Arbeitnow is browser-friendly — it returns CORS headers over HTTPS. PostStack needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are Arbeitnow and PostStack free for commercial use?
Arbeitnow has unclear commercial terms, and PostStack 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.