You paid for the click — then the visitor lands on a generic homepage and the thread breaks. Kernvel Personalization swaps headlines, heroes, CTAs, and announcements to match the campaign, country, or visitor type, with rules you can read.
An ad that promises the summer sale should land on the summer sale — not a homepage that makes the visitor hunt for it. Matching the message is the cheapest conversion lift there is.
US visitors, returning customers, TikTok mobile traffic, and email clicks all deserve different first impressions — without you building four landing pages.
No profiles, no tracking pixels, no black-box AI deciding what people see. Rules you wrote, applied transparently, counting only anonymous aggregates.
Best for stores running paid campaigns to a single storefront. Every feature below ships in the free app — there are no paid tiers.
Fourteen signals — campaign UTMs, referrer, country, language, device, new vs returning, time and day — combined with eleven operators into rules anyone on the team can read.
Swap headlines, subtext, hero images, CTAs, and announcements, or show and hide sections. Guardrails make checkout, pricing, and cart structurally off-limits.
Variations apply before paint via Shopify-native config delivery — no flicker, no layout jump, and a failsafe that always shows your default content.
Meta summer sale, US/UK shipping messages, TikTok mobile, returning-visitor VIP, and more — installed disabled so you can review before going live.
Schedule rules in your store's timezone and roll back to any of the last twenty config versions in one click.
Total and per-variation impressions, a daily personalized-views trend, and a campaign-gap report showing paid traffic that no rule matched yet.
Start from the library or compose your own conditions — the editor shows exactly who will match.
Set the headline, hero, CTA, or announcement the matched visitors should see. Preview before it goes live.
Watch per-variation impressions and the campaign-gap report, then add rules for the traffic you're missing.
No plans, no feature gates, no surprise charges. These tools are how we earn trust with merchants — and every one includes a free concierge setup call with our team.
No subscription, no usage caps, no premium tier hiding the good parts. The app you install is the whole app.
Rule-based and deterministic — no AI black boxes. You can always see exactly why the app did what it did.
No shopper profiling, aggregate-only counters, minimal Shopify permissions, and data that cleans up after itself.
No — and that's the point. Every change is a rule you wrote and can read. Same visitor context in, same content out, every time.
No profiles, no cookies-for-tracking, no raw UTMs stored. It counts anonymous aggregate impressions per variation per day, and respects your store's consent settings.
No. Actions are cosmetic-only by design, with server-side guardrails that block commerce-critical targets — it shows different content, it never restricts or reprices anything.
All signals, unlimited-within-limits rules and variations (50 each), recipes, scheduling, rollback, and analytics. No plans, no limits.
Every Kernvel Free Tool comes with a free concierge setup — a 15-minute call where our team configures the app for your store. That's the whole pitch: useful tools, set up properly, no invoice.
More Free Tools: Product Feed Audit · Catalog Audit · Shipping Calculator · Gift Wrap · Back in Stock