Avada SEO vs Booster SEO: Shopify Performance Comparison
Avada SEO wins with Grade B vs Grade C — a one-grade performance difference that compounds on mobile devices.
Both apps provide SEO optimization and metadata management 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 | Avada SEO | Booster SEO | Faster |
|---|---|---|---|
| Overall Grade | B | C | Avada SEO |
| JS Payload | 67.34 KB | 398.06 KB | Avada SEO |
| CPU Desktop | 7 ms | 15 ms | Avada SEO |
| CPU Mobile | 104 ms | 31 ms | Booster SEO |
| Layout Shift | 0.0 | 0.0 | Avada SEO |
Mobile CPU measured with 4× CDP throttle (mid-range Android). Tested 2026-05-30.
Avada SEO — The Faster Option (Grade B)
Avada SEO scores Grade B with a JS payload of 67.34 KB and 7 ms desktop CPU execution. Mobile CPU: 104 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 Avada SEO speed report →
Booster SEO — The Heavier Option (Grade C)
Booster SEO scores Grade C with a JS payload of 398.06 KB and 15 ms desktop CPU execution. Mobile CPU: 31 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 Booster SEO speed report →
When to Choose Avada SEO
- 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 Booster SEO
- 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: Avada SEO — Avada SEO 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 2026-05-30.