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PHP-Noise vs Simkl

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

APIPHP-NoiseNEW—SimklNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedSimkl terms — user-contributed data
Free tierFree — limits not publishedFree read routes; client_id for search
Rate limitUnpublished1 req/s documented
In directory since2026-07-052026-07-05
operationalpartialdownno data

PHP-Noise vs Simkl: common questions

Which is more reliable, PHP-Noise or Simkl?

On our scheduled checks, Simkl leads on measured uptime — PHP-Noise at —% versus Simkl at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do PHP-Noise and Simkl need an API key?

Neither needs a paid key — PHP-Noise is callable with no signup, and Simkl is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call PHP-Noise and Simkl from the browser?

Yes — both PHP-Noise and Simkl 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 PHP-Noise and Simkl free for commercial use?

PHP-Noise has unclear commercial terms, and Simkl 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.