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Supadata vs Todoist

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

APISupadataNEW—TodoistNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — API key required
Rate limitUnpublishedRetry-After: 2s
In directory since2026-07-052026-07-05
operationalpartialdownno data

Supadata vs Todoist: common questions

Which is more reliable, Supadata or Todoist?

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

Both ask you to authenticate — Supadata uses an API key and Todoist 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 Supadata and Todoist from the browser?

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

Are Supadata and Todoist free for commercial use?

Supadata has unclear commercial terms, and Todoist 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.