Postali vs What3Words
Same instrument, two spec sheets — measured, not claimed.
Postali vs What3Words: common questions
Which is more reliable, Postali or What3Words?
Both are neck-and-neck — Postali and What3Words 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, Postali or What3Words?
Postali has the lower median latency in our checks — Postali responds in 69 ms versus What3Words at 391 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 Postali and What3Words need an API key?
Postali needs no key, while What3Words requires a free API key. If you want to start calling without signup, reach for Postali first.
Can I call Postali and What3Words from the browser?
Only Postali is browser-friendly — it returns CORS headers over HTTPS. What3Words needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are Postali and What3Words free for commercial use?
Postali has unclear commercial terms, and What3Words 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.