The Calendar vs xfetch
Same instrument, two spec sheets — measured, not claimed.
The Calendar vs xfetch: common questions
Which is more reliable, The Calendar or xfetch?
On our scheduled checks, xfetch leads on measured uptime — The Calendar at —% versus xfetch 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 The Calendar and xfetch need an API key?
The Calendar needs no key, while xfetch requires a free API key. If you want to start calling without signup, reach for The Calendar first.
Can I call The Calendar and xfetch from the browser?
Yes — both The Calendar and xfetch send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.
Are The Calendar and xfetch free for commercial use?
The Calendar has unclear commercial terms, and xfetch 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.