Hebrew Calendar vs mailboxlayer
Same instrument, two spec sheets — measured, not claimed.
Hebrew Calendar vs mailboxlayer: common questions
Which is more reliable, Hebrew Calendar or mailboxlayer?
Both are neck-and-neck — Hebrew Calendar and mailboxlayer 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, Hebrew Calendar or mailboxlayer?
mailboxlayer has the lower median latency in our checks — Hebrew Calendar responds in 533 ms versus mailboxlayer at 316 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 Hebrew Calendar and mailboxlayer need an API key?
Hebrew Calendar needs no key, while mailboxlayer requires a free API key. If you want to start calling without signup, reach for Hebrew Calendar first.
Can I call Hebrew Calendar and mailboxlayer from the browser?
Only Hebrew Calendar is browser-friendly — it returns CORS headers over HTTPS. mailboxlayer needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are Hebrew Calendar and mailboxlayer free for commercial use?
Hebrew Calendar has unclear commercial terms, and mailboxlayer 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.