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ItsThisForThat vs Sheetsu

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

APIItsThisForThatHEALTHY98SheetsuHEALTHY92
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms242572
P95 · ms5551259
AuthnoneapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — key may be required
Rate limitUnpublished (docs ask you not to hammer it)90 req/window · 89 remaining
In directory since2026-07-052026-07-05
operationalpartialdownno data

ItsThisForThat vs Sheetsu: common questions

Which is more reliable, ItsThisForThat or Sheetsu?

Both are neck-and-neck — ItsThisForThat and Sheetsu each measure 100% 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.

Which is faster, ItsThisForThat or Sheetsu?

ItsThisForThat has the lower median latency in our checks — ItsThisForThat responds in 242 ms versus Sheetsu at 572 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do ItsThisForThat and Sheetsu need an API key?

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

Can I call ItsThisForThat and Sheetsu from the browser?

Only Sheetsu 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 ItsThisForThat and Sheetsu free for commercial use?

ItsThisForThat has unclear commercial terms, and Sheetsu 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.