IPMA vs openSenseMap
Same instrument, two spec sheets — measured, not claimed.
IPMA vs openSenseMap: common questions
Which is more reliable, IPMA or openSenseMap?
On our scheduled checks, IPMA leads on measured uptime — IPMA at 98.0% versus openSenseMap at 90.2% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Which is faster, IPMA or openSenseMap?
openSenseMap has the lower median latency in our checks — IPMA responds in 1024 ms versus openSenseMap at 655 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 IPMA and openSenseMap need an API key?
Neither needs a paid key — IPMA is callable with no signup, and openSenseMap is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call IPMA and openSenseMap from the browser?
Yes — both IPMA and openSenseMap 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 IPMA and openSenseMap free for commercial use?
IPMA has unclear commercial terms, and openSenseMap 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.