ExchangeRate-API (open) vs Signaliz
Same instrument, two spec sheets — measured, not claimed.
ExchangeRate-API (open) vs Signaliz: common questions
Which is more reliable, ExchangeRate-API (open) or Signaliz?
On our scheduled checks, Signaliz leads on measured uptime — ExchangeRate-API (open) at —% versus Signaliz 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 ExchangeRate-API (open) and Signaliz need an API key?
ExchangeRate-API (open) needs no key, while Signaliz requires a free API key. If you want to start calling without signup, reach for ExchangeRate-API (open) first.
Can I call ExchangeRate-API (open) and Signaliz from the browser?
Yes — both ExchangeRate-API (open) and Signaliz 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 ExchangeRate-API (open) and Signaliz free for commercial use?
ExchangeRate-API (open) has unclear commercial terms, and Signaliz 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.