Dr Volume & Bulk Discount vs Giftship: Gift, Bundle & Ship: Shopify Performance Comparison
Dr Volume & Bulk Discount wins with Grade B vs Grade C — a one-grade performance difference that compounds on mobile devices.
Both apps provide product bundling and volume discounts 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 | Dr Volume & Bulk Discount | Giftship: Gift, Bundle & Ship | Faster |
|---|---|---|---|
| Overall Grade | B | C | Dr Volume & Bulk Discount |
| JS Payload | 112.67 KB | 224.45 KB | Dr Volume & Bulk Discount |
| CPU Desktop | 20 ms | 3 ms | Giftship: Gift, Bundle & Ship |
| CPU Mobile | 72 ms | 12 ms | Giftship: Gift, Bundle & Ship |
| Layout Shift | 0.0 | 0.0 | Dr Volume & Bulk Discount |
Mobile CPU measured with 4× CDP throttle (mid-range Android). Tested 2026-05-30.
Dr Volume & Bulk Discount — The Faster Option (Grade B)
Dr Volume & Bulk Discount scores Grade B with a JS payload of 112.67 KB and 20 ms desktop CPU execution. Mobile CPU: 72 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 Dr Volume & Bulk Discount speed report →
Giftship: Gift, Bundle & Ship — The Heavier Option (Grade C)
Giftship: Gift, Bundle & Ship scores Grade C with a JS payload of 224.45 KB and 3 ms desktop CPU execution. Mobile CPU: 12 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 Giftship: Gift, Bundle & Ship speed report →
When to Choose Dr Volume & Bulk Discount
- 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 Giftship: Gift, Bundle & Ship
- 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: Dr Volume & Bulk Discount — Dr Volume & Bulk Discount wins with Grade B vs Grade C — a one-grade performance difference that compounds on mobile devices.
Install Dr Volume & Bulk Discount →
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.