DummyJSON vs Todoist

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

Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms
P95 · ms
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — no keyFree tier — API key required
Rate limit100 req/window · 99 remaining · resets 1783510243Retry-After: 2s
In directory since2026-07-052026-07-05
operationalpartialdownno data

DummyJSON vs Todoist: common questions

Which is more reliable, DummyJSON or Todoist?

On our scheduled checks, Todoist leads on measured uptime — DummyJSON 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 DummyJSON and Todoist need an API key?

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

Can I call DummyJSON and Todoist from the browser?

Only DummyJSON 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 DummyJSON and Todoist free for commercial use?

DummyJSON 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.