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languagelayer vs Todoist

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

APIlanguagelayerNEW—TodoistNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedRetry-After: 2s
In directory since2026-07-052026-07-05
operationalpartialdownno data

languagelayer vs Todoist: common questions

Which is more reliable, languagelayer or Todoist?

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

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

Can I call languagelayer and Todoist from the browser?

Neither sends browser-friendly CORS headers reliably, so call languagelayer and Todoist from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are languagelayer and Todoist free for commercial use?

languagelayer 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.