Church Calendar vs Telegraph
Same instrument, two spec sheets — measured, not claimed.
Church Calendar vs Telegraph: common questions
Which is more reliable, Church Calendar or Telegraph?
Both are neck-and-neck — Church Calendar and Telegraph 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 Telegraph?
Church Calendar has the lower median latency in our checks — Church Calendar responds in 430 ms versus Telegraph at 444 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 Telegraph need an API key?
Church Calendar needs no key, while Telegraph requires a free API key. If you want to start calling without signup, reach for Church Calendar first.
Can I call Church Calendar and Telegraph from the browser?
Only Telegraph 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 Telegraph free for commercial use?
Church Calendar has unclear commercial terms, and Telegraph 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.