Bufferapp vs The SMS Works API
Same instrument, two spec sheets — measured, not claimed.
Bufferapp vs The SMS Works API: common questions
Which is more reliable, Bufferapp or The SMS Works API?
Both are neck-and-neck — Bufferapp and The SMS Works API 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, Bufferapp or The SMS Works API?
The SMS Works API has the lower median latency in our checks — Bufferapp responds in 547 ms versus The SMS Works API at 518 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 Bufferapp and The SMS Works API need an API key?
Both ask you to authenticate — Bufferapp uses an API key and The SMS Works API uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.
Can I call Bufferapp and The SMS Works API from the browser?
Only The SMS Works API is browser-friendly — it returns CORS headers over HTTPS. Bufferapp needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are Bufferapp and The SMS Works API free for commercial use?
Bufferapp has unclear commercial terms, and The SMS Works API 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.