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TimeZones iCal Library vs Disify

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

APITimeZones iCal LibraryUNMONITORED—DisifyNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

TimeZones iCal Library vs Disify: common questions

Which is more reliable, TimeZones iCal Library or Disify?

Only Disify is on our probe schedule so far (—% uptime over 90 days). The other is catalogued but not yet live-checked, so we can't compare measured reliability head-to-head — check the uncovered API's own status page for now.

Do TimeZones iCal Library and Disify need an API key?

Neither needs a paid key — TimeZones iCal Library is callable with no signup, and Disify is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call TimeZones iCal Library and Disify from the browser?

Yes — both TimeZones iCal Library and Disify 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 TimeZones iCal Library and Disify free for commercial use?

TimeZones iCal Library has unclear commercial terms, and Disify 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.