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Church Calendar vs Tumblr

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

APIChurch CalendarHEALTHY89TumblrREACHABLE100
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms848208
P95 · ms19971101
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?

Both are neck-and-neck — Church Calendar and Tumblr 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, Church Calendar or Tumblr?

Tumblr has the lower median latency in our checks — Church Calendar responds in 848 ms versus Tumblr at 208 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 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.