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Aare.guru API vs openSenseMap

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

APIAare.guru APINEW—openSenseMapNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedOpen data (license set per senseBox; often public domain)
Free tierFree — limits not publishedFree (open-source citizen-science platform)
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Aare.guru API vs openSenseMap: common questions

Which is more reliable, Aare.guru API or openSenseMap?

On our scheduled checks, openSenseMap leads on measured uptime — Aare.guru API at —% versus openSenseMap 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 Aare.guru API and openSenseMap need an API key?

Neither needs a paid key — Aare.guru API is callable with no signup, and openSenseMap is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Aare.guru API and openSenseMap from the browser?

Yes — both Aare.guru API and openSenseMap 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 Aare.guru API and openSenseMap free for commercial use?

Aare.guru API has unclear commercial terms, and openSenseMap 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.