IPinfo vs Userstack
Same instrument, two spec sheets — measured, not claimed.
IPinfo vs Userstack: common questions
Which is more reliable, IPinfo or Userstack?
On our scheduled checks, Userstack leads on measured uptime — IPinfo at 94.1% versus Userstack at 99.02% 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, IPinfo or Userstack?
IPinfo has the lower median latency in our checks — IPinfo responds in 200 ms versus Userstack at 443 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 IPinfo and Userstack need an API key?
IPinfo needs no key, while Userstack requires a free API key. If you want to start calling without signup, reach for IPinfo first.
Can I call IPinfo and Userstack from the browser?
Yes — both IPinfo and Userstack 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 IPinfo and Userstack free for commercial use?
IPinfo has unclear commercial terms, and Userstack 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.