GemPages vs Shogun: Shopify Performance Comparison
GemPages wins with Grade A vs Grade C — a significant performance difference that compounds on mobile devices.
Both apps provide landing page and section building 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 | GemPages | Shogun | Faster |
|---|---|---|---|
| Overall Grade | A | C | GemPages |
| JS Payload | 15.53 KB | 185.14 KB | GemPages |
| CPU Desktop | 3 ms | 45 ms | GemPages |
| CPU Mobile | 7 ms | 601 ms | GemPages |
| Layout Shift | 0.0 | 0.0 | GemPages |
Mobile CPU measured with 4× CDP throttle (mid-range Android). Tested 2026-05-31.
GemPages — The Faster Option (Grade A)
GemPages scores Grade A with a JS payload of 15.53 KB and 3 ms desktop CPU execution. Mobile CPU: 7 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 GemPages speed report →
Shogun — The Heavier Option (Grade C)
Shogun scores Grade C with a JS payload of 185.14 KB and 45 ms desktop CPU execution. Mobile CPU: 601 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 Shogun speed report →
When to Choose GemPages
- 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 Shogun
- 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: GemPages — GemPages wins with Grade A vs Grade C — a significant 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.