Google Ads Budget Optimizer for Shopify Stores
Stop guessing your Google Ads budget. Use our free optimizer to calculate the optimal ad spend for your Shopify store based on your specific revenue goals and margins, ensuring every euro is invested for maximum incremental lift.
Three platforms, three answers, one budget to defend. Your GA4 export already holds the answer, and the first finding is free and never leaves your browser. Get your first finding free
By Joris van Huët, Founder & CEOUpdated 1 min read
Run the numbers for your store: the free break-even ROAS calculator.
Stop Burning Cash on Google Ads
Your Shopify store is growing, but your Google Ads ROAS is a black box. You are spending tens of thousands of euros a month, but can you confidently say it is driving new customers? Or is it just cannibalizing your organic traffic? The truth is, without a proper marketing attribution model, you are flying blind.
Causality Engine uses causal inference on the GA4 history you already have to estimate what each channel caused.
How It Works: The Math Behind the Magic
Find out more about our methodology in our resources.
Related Resources
Google Ads True ROAS Calculator: Measure Incremental Impact
Ad Spend Waste Calculator: How Much Are You Losing to Bad Attribution
Free ROAS Calculator for ecommerce: Calculate Your True Return
Frequently asked questions
Is this tool really free?
Your first finding is free on the start page: drop the GA4 export and it is worked out in your browser, so the file is not uploaded. We want to show you the power of causal inference.How is this different from Google's own recommendations?
Google's recommendations are based on their own platform data and are designed to increase your spend. We use causal inference to find the incremental value, not just platform-reported conversions.What data do I need to provide?
Causality Engine reads one file, the Attribution paths export from GA4, and shows what each channel caused next to what last-click gave it.
Go deeper: Causal attribution, explained.
Sixty-second versions of these ideas: Causality Engine on YouTube Shorts.
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Terms in this article
- Ad SpendAd Spend is the total amount invested in advertising campaigns. It is measured against Return on Ad Spend (ROAS) to evaluate campaign effectiveness.
- AttributionAttribution identifies user actions that contribute to a desired outcome and assigns value to each. It reveals which marketing touchpoints drive conversions.
- Causal InferenceCausal inference is the set of methods for estimating how much an outcome changes because of a cause, rather than alongside it. It works by comparing what happened with an estimate of what would have happened without the cause.
- CausalityCausality is the relationship where one event directly causes another, essential for identifying specific actions that drive desired outcomes in marketing.
- Google AdsGoogle Ads is an online advertising platform where advertisers bid to display ads, service offerings, and product listings.
- Marketing AttributionMarketing attribution assigns credit to marketing touchpoints that contribute to a conversion or sale. Causal inference enhances attribution models by identifying true cause-effect relationships.
- ShopifyShopify is an ecommerce platform for creating online stores and selling products. Attribution modeling shows which marketing channels drive traffic and conversions within Shopify.