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SkyBiometry vs NASA APOD

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

APISkyBiometryREACHABLE—NASA APODHEALTHY—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesyes
HTTPSnoyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedPublic domain (US Gov)
Free tierFree tier — API key required1,000 req/hour with free key
Rate limitUnpublishedDEMO_KEY: 30/hour, 50/day
In directory since2026-07-052026-05-02
operationalpartialdownno data

SkyBiometry vs NASA APOD: common questions

Which is more reliable, SkyBiometry or NASA APOD?

On our scheduled checks, NASA APOD leads on measured uptime — SkyBiometry at —% versus NASA APOD 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 SkyBiometry and NASA APOD need an API key?

Both ask you to authenticate — SkyBiometry uses an API key and NASA APOD uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call SkyBiometry and NASA APOD from the browser?

Only NASA APOD is browser-friendly — it returns CORS headers over HTTPS. SkyBiometry needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are SkyBiometry and NASA APOD free for commercial use?

SkyBiometry has unclear commercial terms, and NASA APOD allows commercial use on its free tier. 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.