Newton vs Open Notify
Same instrument, two spec sheets — measured, not claimed.
Newton vs Open Notify: common questions
Which is more reliable, Newton or Open Notify?
On our scheduled checks, Open Notify leads on measured uptime — Newton at —% versus Open Notify at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Do Newton and Open Notify need an API key?
Neither needs a paid key — Newton is callable with no signup, and Open Notify is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Newton and Open Notify from the browser?
Only Newton is browser-friendly — it returns CORS headers over HTTPS. Open Notify needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are Newton and Open Notify free for commercial use?
Newton has unclear commercial terms, and Open Notify 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.