Dr Volume & Bulk Discount vs Fast Bundle: Shopify Performance Comparison
⏳ Data pending for Fast Bundle — our scanner captured only the async loader stub for this app. Full bundle metrics are being collected from live Shopify storefronts. Once available, this page will show a complete head-to-head comparison.
Both Dr Volume & Bulk Discount and Fast Bundle provide product bundling and volume discounts functionality for Shopify stores.
What We Know: Dr Volume & Bulk Discount (Benchmarked)
Dr Volume & Bulk Discount has been measured in StackConflict’s clean-room lab:
| Metric | Dr Volume & Bulk Discount |
|---|---|
| Overall Grade | B |
| JS Payload | 112.67 KB |
| CPU Desktop | 20 ms |
| CPU Mobile | 72 ms (0.1s) |
| Layout Shift | 0.0 |
Grade B means Dr Volume & Bulk Discount passes every StackConflict threshold — safe to install on any storefront including mobile-first stores.
View full Dr Volume & Bulk Discount speed report →
Pending: Fast Bundle
StackConflict’s scanner detected that Fast Bundle uses an async JavaScript loader — a small stub that only initialises its full bundle on a real, authenticated Shopify storefront. This means our lab environment captured the tiny stub file only, not the production bundle that actually runs on live stores.
We are collecting real bundle data by scanning public Shopify storefronts. Once captured, the head-to-head metrics for Fast Bundle will appear here automatically.
View Fast Bundle on Shopify App Store →
About This Test
StackConflict measures each Shopify app in an isolated clean-room environment — a Playwright-controlled browser with no other scripts installed. V8 CPU cost is the ScriptDuration delta measured before and after bundle injection. Mobile CPU applies the standard 4× Lighthouse slowdown factor.
Dr Volume & Bulk Discount data from the StackConflict Lab (2026-05-31). Fast Bundle data pending.