Fixer vs Yahoo Finance Chart
Same instrument, two spec sheets — measured, not claimed.
Fixer vs Yahoo Finance Chart: common questions
Which is more reliable, Fixer or Yahoo Finance Chart?
On our scheduled checks, Yahoo Finance Chart leads on measured uptime — Fixer at —% versus Yahoo Finance Chart 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 Fixer and Yahoo Finance Chart need an API key?
Yahoo Finance Chart needs no key, while Fixer requires a free API key. If you want to start calling without signup, reach for Yahoo Finance Chart first.
Can I call Fixer and Yahoo Finance Chart from the browser?
Only Fixer is browser-friendly — it returns CORS headers over HTTPS. Yahoo Finance Chart needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are Fixer and Yahoo Finance Chart free for commercial use?
Fixer has unclear commercial terms, and Yahoo Finance Chart 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.