The SMS Works API vs TimeZones iCal Library
Same instrument, two spec sheets — measured, not claimed.
The SMS Works API vs TimeZones iCal Library: common questions
Which is more reliable, The SMS Works API or TimeZones iCal Library?
Both are neck-and-neck — The SMS Works API and TimeZones iCal Library 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, The SMS Works API or TimeZones iCal Library?
TimeZones iCal Library has the lower median latency in our checks — The SMS Works API responds in 518 ms versus TimeZones iCal Library at 337 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 The SMS Works API and TimeZones iCal Library need an API key?
TimeZones iCal Library needs no key, while The SMS Works API requires a free API key. If you want to start calling without signup, reach for TimeZones iCal Library first.
Can I call The SMS Works API and TimeZones iCal Library from the browser?
Yes — both The SMS Works API and TimeZones iCal Library 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 SMS Works API and TimeZones iCal Library free for commercial use?
The SMS Works API has unclear commercial terms, and TimeZones iCal Library 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.