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7Timer! vs Groundhog Day API

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

API7Timer!HEALTHY91Groundhog Day APIHEALTHY98
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms600262
P95 · ms2935596
Authnonenone
CORSnoyes
HTTPSnoyes
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

7Timer! vs Groundhog Day API: common questions

Which is more reliable, 7Timer! or Groundhog Day API?

Both are neck-and-neck — 7Timer! and Groundhog Day API 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, 7Timer! or Groundhog Day API?

Groundhog Day API has the lower median latency in our checks — 7Timer! responds in 600 ms versus Groundhog Day API at 262 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 7Timer! and Groundhog Day API need an API key?

Neither needs a paid key — 7Timer! is callable with no signup, and Groundhog Day API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call 7Timer! and Groundhog Day API from the browser?

Only Groundhog Day API 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 Groundhog Day API free for commercial use?

7Timer! has unclear commercial terms, and Groundhog Day API 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.