Kroki vs Passantenfrequenzen Zürich

Same instrument, two spec sheets — measured, not claimed.

Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms633569
P95 · ms31831228
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Kroki vs Passantenfrequenzen Zürich: common questions

Which is more reliable, Kroki or Passantenfrequenzen Zürich?

Both are neck-and-neck — Kroki and Passantenfrequenzen Zürich each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, Kroki or Passantenfrequenzen Zürich?

Passantenfrequenzen Zürich has the lower median latency in our checks — Kroki responds in 633 ms versus Passantenfrequenzen Zürich at 569 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 Kroki and Passantenfrequenzen Zürich need an API key?

Neither needs a paid key — Kroki is callable with no signup, and Passantenfrequenzen Zürich is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Kroki and Passantenfrequenzen Zürich from the browser?

Yes — both Kroki and Passantenfrequenzen Zürich 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 Kroki and Passantenfrequenzen Zürich free for commercial use?

Kroki has unclear commercial terms, and Passantenfrequenzen Zürich 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.