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Affirmations.dev vs Catherine Shulman's Quotes

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

APIAffirmations.devHEALTHY92Catherine Shulman's QuotesHEALTHY91
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms590638
P95 · ms10812067
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Affirmations.dev vs Catherine Shulman's Quotes: common questions

Which is more reliable, Affirmations.dev or Catherine Shulman's Quotes?

Both are neck-and-neck — Affirmations.dev and Catherine Shulman's Quotes 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, Affirmations.dev or Catherine Shulman's Quotes?

Affirmations.dev has the lower median latency in our checks — Affirmations.dev responds in 590 ms versus Catherine Shulman's Quotes at 638 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 Affirmations.dev and Catherine Shulman's Quotes need an API key?

Neither needs a paid key — Affirmations.dev is callable with no signup, and Catherine Shulman's Quotes is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Affirmations.dev and Catherine Shulman's Quotes from the browser?

Only Catherine Shulman's Quotes is browser-friendly — it returns CORS headers over HTTPS. Affirmations.dev needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Affirmations.dev and Catherine Shulman's Quotes free for commercial use?

Affirmations.dev has unclear commercial terms, and Catherine Shulman's Quotes 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.