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Bufferapp vs Church Calendar

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

APIBufferappNEW—Church CalendarNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnoyes
HTTPSyesno
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Bufferapp vs Church Calendar: common questions

Which is more reliable, Bufferapp or Church Calendar?

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

Church Calendar needs no key, while Bufferapp requires a free API key. If you want to start calling without signup, reach for Church Calendar first.

Can I call Bufferapp and Church Calendar from the browser?

Neither sends browser-friendly CORS headers reliably, so call Bufferapp and Church Calendar from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Bufferapp and Church Calendar free for commercial use?

Bufferapp has unclear commercial terms, and Church Calendar 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.