← All apps Social Proof Fera Proof vs Nudgify
🔬 Lab Findings 🔧 Stack Builder
⏳ Pending
?
Fera Proof
Data pending
★ 4.7 · 1,919 reviews
Under Review
VS
⚡ Faster
A
Nudgify
18.46 KB · 4 ms CPU
★ 4.5 · 66 reviews
Lightweight
Metric Fera Proof Nudgify
Overall Grade A A
JS Payload 3.22 KB 18.46 KB
CPU Desktop Pending ⏳ 4 ms
CPU Mobile Pending ⏳ 9 ms
Layout Shift 0 0
Merchant Rating ★ 4.7 (1,919) ★ 4.5 (66)

Fera Proof vs Nudgify: Shopify Performance Comparison

Data pending for Fera Proof — 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 Fera Proof and Nudgify provide social proof and FOMO notifications functionality for Shopify stores.

What We Know: Nudgify (Benchmarked)

Nudgify has been measured in StackConflict’s clean-room lab:

MetricNudgify
Overall GradeA
JS Payload18.46 KB
CPU Desktop4 ms
CPU Mobile9 ms (0.0s)
Layout Shift0.0

Grade A means Nudgify passes every StackConflict threshold — safe to install on any storefront including mobile-first stores.

View full Nudgify speed report →

Pending: Fera Proof

StackConflict’s scanner detected that Fera Proof 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 Fera Proof will appear here automatically.

View Fera Proof 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.


Nudgify data from the StackConflict Lab (2026-05-30). Fera Proof data pending.