Prop 65 app comparison

Prop 65 Warning Manager vs Prop65Kit — approved, cited warnings vs theme-editor display

Direct answer. Prop 65 Warning Manager fits when every warning needs merchant approval before it goes live, is published from templates citing 27 CCR 25601–25607 (including 2028 short-form text with chemical names), and has each pick, edit, and activation timestamped in an audit log. A theme-editor display app adds the safe-harbor warning in minutes.

See the 2028 product-page warning, native disclosures versus an audit log, merchant approval before go-live, and the Prop 65 warning question check.

Fair comparison of Prop 65 Warning Manager and Prop65Kit.

Free check first: Prop 65 warning question check runs in your browser and sends nothing. Describe a product and see which list names and 27 CCR warning rules to read.

What each app mentioned

“not mentioned” means that topic was absent — not a claim about an unpublished feature. Sources: Prop65Kit · Prop 65 Warning Manager.

Install Prop 65 Warning Manager

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Prop 65 app comparison — 8 Oct 2026
Topic	Prop65Kit	Prop 65 Warning Manager
How the warning is added	mentioned — add from the Shopify theme editor; no developer and no theme code needed	mentioned — publish from templates citing 27 CCR §§ 25601–25607
Warning format	mentioned — short or long (chemical-named) format	mentioned — 2028 short-form warnings with chemical names
Which products show it	mentioned — every product or only items you tag	mentioned — warning assignments per product
Approval before go-live	not mentioned	mentioned — merchant approval required before any warning goes live
Audit trail	not mentioned	mentioned — picks, edits, and go-live timestamped in an audit log
Storefront styling	mentioned — match your store’s colors; renders inside your theme with pure Liquid	not mentioned

How to choose

If every warning needs merchant approval before it goes live, published from templates citing 27 CCR 25601–25607 including 2028 short-form text with chemical names, with each pick, edit, and activation timestamped in an audit log, Prop 65 Warning Manager fits that job. If you want to add the California Proposition 65 safe-harbor warning from the Shopify theme editor with no code, in short or long format, on every product or only on items you tag, Prop65Kit fits that job.

Install Prop 65 Warning Manager → pick a cited template → approve before go-live

What this comparison is not

Not legal advice.
Not a claim that either app makes a store Prop 65 compliant.