Coming Soon vs Dr Stacked Discounts on Cart: Shopify Performance Comparison
Coming Soon wins with Grade B vs Grade C — a one-grade performance difference that compounds on mobile devices.
Both apps provide general Shopify store enhancement 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 | Coming Soon | Dr Stacked Discounts on Cart | Faster |
|---|---|---|---|
| Overall Grade | B | C | Coming Soon |
| JS Payload | 84.99 KB | 213.87 KB | Coming Soon |
| CPU Desktop | 4 ms | 16 ms | Coming Soon |
| CPU Mobile | 9 ms | 67 ms | Coming Soon |
| Layout Shift | 0.0 | 0.0 | Coming Soon |
Mobile CPU measured with 4× CDP throttle (mid-range Android). Tested 2026-05-31.
Coming Soon — The Faster Option (Grade B)
Coming Soon scores Grade B with a JS payload of 84.99 KB and 4 ms desktop CPU execution. Mobile CPU: 9 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 Coming Soon speed report →
Dr Stacked Discounts on Cart — The Heavier Option (Grade C)
Dr Stacked Discounts on Cart scores Grade C with a JS payload of 213.87 KB and 16 ms desktop CPU execution. Mobile CPU: 67 ms. This places it in the heavier half of StackConflict’s benchmark dataset — merchants running mobile-first stores should evaluate whether the feature value justifies the performance tradeoff.
View full Dr Stacked Discounts on Cart speed report →
When to Choose Coming Soon
- You need its specific features and can monitor its mobile impact
- Your other apps are lightweight (Grade A) so there is headroom
- You are on desktop-skewed traffic where CPU cost matters less
When to Choose Dr Stacked Discounts on Cart
- Its unique feature set has no lighter equivalent in StackConflict’s database
- Your store traffic is predominantly desktop
- You have already removed or lightened other heavy scripts to compensate
Performance Verdict
Winner: Coming Soon — Coming Soon wins with Grade B vs Grade C — a one-grade performance difference that compounds on mobile devices.
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 2026-05-31.