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# Why Add to Cart doesn't match?

## Overview 

If you’ve ever compared “Add to Cart” numbers between **Shopify**, **Ads Manager**, and your **wetracked.io dashboard**, you might have noticed they don’t match — and that’s perfectly normal.
Each platform measures “Add to Cart” events differently, which can lead to variations in reporting. Understanding these differences helps you accurately analyze campaign performance and avoid false assumptions.

**Example:**
Shopify may show **4 Add to Cart sessions**, while Ads Manager shows **10 Add to Cart events** for the same period. This difference happens because each system tracks events using different methods and attribution rules.

## Before You Start
It’s important to understand how each platform counts “Add to Cart” events:

# Shopify
* Tracks **Add to Cart** events **per session**, meaning each customer session that adds an item to the cart is counted once. Regardless how many item is being added to cart if it's only 1 user who does the session then it's counted as 1 only Add to Cart 
# wetracked.io Dashboard
* Tracks **Add to Cart** events **per item added**, so each product added to the cart is recorded as a separate event.
# Ads Manager
* Tracks **Add to Cart** events **per item added** as well; however, due to strict **event matching limitations**, not all Add to Cart events may appear in the Ads Manager dashboard.

## Verification Checklist

To confirm that tracking is working correctly:
1. Open **Events Manager** and select the correct **Pixel ID** or **Dataset**.
2. Compare the number of **Add to Cart** events between **wetracked.io** and **Events Manager**.

✅ **Expected Behavior:**
If both platforms report similar numbers (allowing for small timezone differences), tracking is functioning correctly.

💡 **Note:** Events Manager applies time zones based on user IP addresses. Small mismatches between **Events Manager** and **wetracked.io** data are usually due to time zone differences, not tracking errors.

## Which Numbers to Rely On

✅ Use **Ads Manager** as your **main source of truth** when evaluating campaign performance.
It applies **advanced event matching** and **multi-touch attribution**, making it the most accurate for ad results.

## FAQs

**Q: Why does Shopify show fewer Add to Cart numbers than Ads Manager?**
**A:** Shopify only records “Add to Cart” **per visitor session**, not per product added.
If one user adds 10 products, Shopify still logs only **1 Add to Cart session**, while Ads Manager will record **10 Add to Cart events**.

**Q: My wetracked.io dashboard doesn’t exactly match Events Manager. Is that normal?**
**A:** Yes. Small differences (due to timezone and event attribution models) are expected. If counts are close, your tracking setup is working correctly.

## Helpful Resources

* [How to Find Meta Events Manager in Business Manager](https://help.wetracked.io/en/article/where-can-i-locate-the-events-manager-in-my-meta-business-manager-updated-njmkrk/?bust=1759200516514)