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ipify vs ItsThisForThat

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

APIipifyHEALTHY—ItsThisForThatNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licensen/aUnverified
Free tierUnlimitedFree — limits not published
Rate limitNoneUnpublished (docs ask you not to hammer it)
In directory since2026-05-022026-07-05
operationalpartialdownno data

ipify vs ItsThisForThat: common questions

Which is more reliable, ipify or ItsThisForThat?

On our scheduled checks, ItsThisForThat leads on measured uptime — ipify at —% versus ItsThisForThat 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 ipify and ItsThisForThat need an API key?

Neither needs a paid key — ipify is callable with no signup, and ItsThisForThat is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call ipify and ItsThisForThat from the browser?

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

Are ipify and ItsThisForThat free for commercial use?

ipify allows commercial use on its free tier, and ItsThisForThat 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.