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OnSched Consumer API vs Sheetsu

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

APIOnSched Consumer APIHEALTHY88SheetsuHEALTHY92
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms722572
P95 · ms18901259
AuthapiKeyapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — key may be required
Rate limitUnpublished90 req/window · 89 remaining
In directory since2026-07-052026-07-05
operationalpartialdownno data

OnSched Consumer API vs Sheetsu: common questions

Which is more reliable, OnSched Consumer API or Sheetsu?

Both are neck-and-neck — OnSched Consumer API 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, OnSched Consumer API or Sheetsu?

Sheetsu has the lower median latency in our checks — OnSched Consumer API responds in 722 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 OnSched Consumer API and Sheetsu need an API key?

Both ask you to authenticate — OnSched Consumer API uses an API key and Sheetsu uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call OnSched Consumer API and Sheetsu from the browser?

Yes — both OnSched Consumer API and Sheetsu 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 OnSched Consumer API and Sheetsu free for commercial use?

OnSched Consumer API 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.