Nextdoor Pixel vs WCT (Wishlist & Cart Tracking): Shopify Performance Comparison
Both apps score Grade A — WCT (Wishlist & Cart Tracking) has the edge with 12 ms vs 14 ms desktop CPU execution.
Both apps provide heatmaps, session recording, and analytics functionality for Shopify stores. This page presents StackConflict’s independent lab results for both — measured in a clean-room environment with no other apps installed.
Head-to-Head Metrics
| Metric | Nextdoor Pixel | WCT (Wishlist & Cart Tracking) | Faster |
|---|---|---|---|
| Overall Grade | A | A | Tie |
| JS Payload | 21.68 KB | 29.0 KB | Nextdoor Pixel |
| CPU Desktop | 14 ms | 12 ms | WCT (Wishlist & Cart Tracking) |
| CPU Mobile | 10 ms | 35 ms | Nextdoor Pixel |
| Layout Shift | 0.0005 | 0.0005 | Nextdoor Pixel |
Mobile CPU measured with 4× CDP throttle (mid-range Android). Tested 2026-05-30.
WCT (Wishlist & Cart Tracking) — The Faster Option (Grade A)
WCT (Wishlist & Cart Tracking) scores Grade A with a JS payload of 29.0 KB and 12 ms desktop CPU execution. Mobile CPU: 35 ms. It passes every StackConflict threshold for payload, CPU, and layout stability — making it safe to install on any storefront including mobile-first stores where Time-to-Interactive directly impacts conversion.
View full WCT (Wishlist & Cart Tracking) speed report →
Nextdoor Pixel — The Heavier Option (Grade A)
Nextdoor Pixel scores Grade A with a JS payload of 21.68 KB and 14 ms desktop CPU execution. Mobile CPU: 10 ms. Performance is acceptable but worth monitoring, particularly on stores with high mobile traffic share.
View full Nextdoor Pixel speed report →
When to Choose Nextdoor Pixel
- You are running a mobile-heavy store and Core Web Vitals matter
- You want to stack multiple apps without worrying about combined JS cost
- Conversion rate optimisation is a key priority
When to Choose WCT (Wishlist & Cart Tracking)
- You are running a mobile-heavy store and Core Web Vitals matter
- You want to stack multiple apps without worrying about combined JS cost
- Conversion rate optimisation is a key priority
Performance Verdict
Result: Comparable — Both apps score Grade A — WCT (Wishlist & Cart Tracking) has the edge with 12 ms vs 14 ms desktop CPU execution.
Install WCT (Wishlist & Cart Tracking) →
About This Test
StackConflict measures each Shopify app in an isolated clean-room environment — a single development store, no other scripts, Playwright-controlled browser. V8 CPU cost is the ScriptDuration delta before and after injection. CLS is captured from the same browser session. Results represent the median of three independent runs with outliers removed.
Data from the StackConflict Lab. Last updated 2026-05-30.