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CurrencyFreaks vs Helium

Same instrument, two spec sheets — measured, not claimed.

APICurrencyFreaksDEAD0HeliumDEAD0
Uptime · 30d
Uptime · 90d0.0%0.0%
Uptime · 30d0.0%0.0%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFirst 50 queries per IP free, no key (paid API key beyond, ~$0.02/query)
Rate limitUnpublished50 free queries per IP subnet
In directory since2026-07-052026-07-05
operationalpartialdownno data

CurrencyFreaks vs Helium: common questions

Which is more reliable, CurrencyFreaks or Helium?

Both are neck-and-neck — CurrencyFreaks and Helium each measure 0.0% 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.

Do CurrencyFreaks and Helium need an API key?

Helium needs no key, while CurrencyFreaks requires a free API key. If you want to start calling without signup, reach for Helium first.

Can I call CurrencyFreaks and Helium from the browser?

Only CurrencyFreaks is browser-friendly — it returns CORS headers over HTTPS. Helium needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are CurrencyFreaks and Helium free for commercial use?

CurrencyFreaks has unclear commercial terms, and Helium 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.