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Church Calendar vs Tumblr

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

APIChurch CalendarNEW—TumblrREACHABLE—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnoneoauth
CORSyesyes
HTTPSnoyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedOAuth — some read routes may be public
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Church Calendar vs Tumblr: common questions

Which is more reliable, Church Calendar or Tumblr?

On our scheduled checks, Tumblr leads on measured uptime — Church Calendar at —% versus Tumblr 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 Church Calendar and Tumblr need an API key?

Church Calendar needs no key, while Tumblr requires OAuth. If you want to start calling without signup, reach for Church Calendar first.

Can I call Church Calendar and Tumblr from the browser?

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

Are Church Calendar and Tumblr free for commercial use?

Church Calendar has unclear commercial terms, and Tumblr 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.