Ayrshare vs caldays
Same instrument, two spec sheets — measured, not claimed.
Ayrshare vs caldays: common questions
Which is more reliable, Ayrshare or caldays?
On our scheduled checks, caldays leads on measured uptime — Ayrshare at —% versus caldays 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 Ayrshare and caldays need an API key?
caldays needs no key, while Ayrshare requires a free API key. If you want to start calling without signup, reach for caldays first.
Can I call Ayrshare and caldays from the browser?
Yes — both Ayrshare and caldays 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 Ayrshare and caldays free for commercial use?
Ayrshare has unclear commercial terms, and caldays 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.