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ItsThisForThat vs Todoist

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

APIItsThisForThatHEALTHY98TodoistDEAD0
Uptime · 30d
Uptime · 90d100%0.0%
Uptime · 30d100%0.0%
P50 · ms242—
P95 · ms555—
AuthnoneapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublished (docs ask you not to hammer it)Retry-After: 2s
In directory since2026-07-052026-07-05
operationalpartialdownno data

ItsThisForThat vs Todoist: common questions

Which is more reliable, ItsThisForThat or Todoist?

On our scheduled checks, ItsThisForThat leads on measured uptime — ItsThisForThat at 100% versus Todoist at 0.0% 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 ItsThisForThat and Todoist need an API key?

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

Can I call ItsThisForThat and Todoist from the browser?

Only Todoist 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 Todoist free for commercial use?

ItsThisForThat 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.