How it works
Three steps. Two clicks to install.
Connect
Install from the Shopify App Store.
Criterion syncs your catalogue automatically. No CSV uploads, no FTP, no spreadsheets. Two clicks and you have a live feed.
Optimise
AI rewrites, scores, and fixes.
Titles get rewritten for each channel. Missing descriptions get written. Products get scored against channel requirements. Merchant Center disapprovals get diagnosed and explained inline.
Ship
Feeds, fresh, everywhere.
Criterion generates correctly-shaped feeds for every channel and keeps them fresh on a schedule. Your catalogue changes — your feeds change with it.
Inside Criterion
The app, not the pitch.
Real screenshots from the live Shopify app. No mockups.
Command Centre
Every channel, every feed, one dashboard.
See the health of each feed at a glance — products synced, products approved, products pending fixes. Drill into any channel for the detail.
AI Optimisation
AI rewrites titles and writes the descriptions you are missing.
Open a product, see Criterion's suggestion alongside what you currently have. Accept individually, accept in bulk, or write your own. The AI never ships changes without you.
Experiments
A/B test your way to better feeds.
Test title variants, image variants, category mappings — and see which version actually moves clicks and conversions on each channel.
Per-channel diagnostics
Why is this product disapproved? Here is exactly why.
Every disapproval traced back to the field that caused it, with the fix surfaced inline. No more digging through Merchant Center error logs to find a missing GTIN.
Features
What Criterion actually does.
Not a feed exporter. Criterion improves the catalogue on the way out — the work most stores either skip or pay agencies to do by hand.
AI feed optimisation
Rewrites product titles and generates descriptions tuned to how each channel actually searches.
Feed health scoring
Every product scored against channel requirements. A single catalogue-wide health number on the Command Centre dashboard.
GMC disapproval diagnosis
Detects Google Merchant Center rejections, explains the cause in plain English, and surfaces the fix inline.
In-app AI assistant
Describe what you want — "tag my premium products", "fix my disapprovals" — and get a reviewable, one-click plan.
Rules engine
A library of ready-made rule templates plus your own custom rules, so optimisations apply automatically as the catalogue changes.
Google taxonomy mapping
Products mapped to the deepest correct Google product category node automatically. No more guessing or generic categories.
Multi-channel feeds
One catalogue, correctly-shaped feeds for every channel. Google wants one thing, Meta wants another — Criterion handles both.
Scheduled sync
Feeds regenerate and refresh automatically. Cadence scales with your plan — from daily to every hour on the higher tiers.
Shopify write-back
Push optimised titles and product data back into Shopify itself, not just the feed. Keep the source of truth in one place.
Channels
One catalogue. Fourteen-plus channels. Correctly shaped for each.
Criterion ships your Shopify catalogue out to every channel that matters, with the right field mappings and the right format for each.
Pricing
Three plans. Honest scope on each.
All plans start with a 14-day free trial, billed through Shopify. Higher tiers raise the catalogue ceiling, monthly AI credits, sync cadence, and unlock advanced features.
Starter
Small catalogues getting their feed right.
- —Core feed optimisation
- —GMC disapproval diagnosis
- —Multi-channel feeds
- —Standard sync cadence
Growth
Growing stores running multi-channel ads.
- —Everything in Starter
- —Higher product / SKU ceiling
- —More monthly AI credits
- —Faster sync cadence
- —Rules engine
Pro
High-volume catalogues that need everything.
- —Everything in Growth
- —Largest catalogue ceiling
- —Highest sync frequency
- —Team seats
- —A/B testing, recommendations, inventory intelligence
Catalogue caps, credit allowances and feature splits visible in the Shopify App Store listing. One-off credit top-up packs available for heavy months.
Built by Oneiro Labs
A product made by an agency that runs feeds for a living.
Criterion is built and maintained by Oneiro Labs — the product studio inside Oneiro Digital. We are a UK-based analytics and ecommerce agency that runs Google Shopping, Meta and TikTok feeds for serious retail brands every day. Criterion is what we wished existed.
What this means for you
- —The engineers who built it answer support.
- —Roadmap is driven by what real merchants actually need, not by enterprise sales.
- —Honest about what the AI can and cannot do. No hype.
- —If you outgrow the app, the agency is there to take over.
FAQs
What people ask before they install.
Does Criterion work with WooCommerce or BigCommerce?
How is Criterion different from a feed exporter?
Do I need to write rules to get value?
How does Merchant Center disapproval diagnosis work?
Is there a free trial?
Who builds and supports Criterion?
Stop losing ad spend to feed errors.
Install Criterion from the Shopify App Store. Fourteen days free. Cancel inside your Shopify admin, anytime.
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