PageBolt vs Userstack
Same instrument, two spec sheets — measured, not claimed.
PageBolt vs Userstack: common questions
Which is more reliable, PageBolt or Userstack?
Both are neck-and-neck — PageBolt and Userstack each measure 99.02% 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, PageBolt or Userstack?
Userstack has the lower median latency in our checks — PageBolt responds in 751 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 PageBolt and Userstack need an API key?
Both ask you to authenticate — PageBolt uses an API key and Userstack 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 PageBolt and Userstack from the browser?
Only Userstack is browser-friendly — it returns CORS headers over HTTPS. PageBolt needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are PageBolt and Userstack free for commercial use?
PageBolt 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.