7Timer! vs Bright Sky (DWD)

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

Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms
P95 · ms
Authnonenone
CORSnoyes
HTTPSnoyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedUnlimited, no key, no credit card
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

7Timer! vs Bright Sky (DWD): common questions

Which is more reliable, 7Timer! or Bright Sky (DWD)?

On our scheduled checks, Bright Sky (DWD) leads on measured uptime — 7Timer! at —% versus Bright Sky (DWD) 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 7Timer! and Bright Sky (DWD) need an API key?

Neither needs a paid key — 7Timer! is callable with no signup, and Bright Sky (DWD) is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call 7Timer! and Bright Sky (DWD) from the browser?

Only Bright Sky (DWD) is browser-friendly — it returns CORS headers over HTTPS. 7Timer! needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are 7Timer! and Bright Sky (DWD) free for commercial use?

7Timer! has unclear commercial terms, and Bright Sky (DWD) 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.