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🔬 Lab Findings 🔧 Stack Builder

Loyalty Apps for Shopify — Performance Ranked

5 benchmarked loyalty rewards and referral programs apps, ranked by real JavaScript overhead measured in StackConflict's clean-room lab.

5 Apps benchmarked
2 Grade A or B
33 ms Avg CPU cost
132 ms Avg mobile CPU
★ 4.7 Avg merchant rating
FASTEST

LoyaltyLion is the lightest loyalty rewards and referral programs app we've tested — 113.45 KB payload and 18 ms CPU (Grade B).

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#1
B
LoyaltyLion
by LoyaltyLion
📦 113.45 KB
⚡ 18 ms desktop
📱 130 ms mobile ✓
★ 4.6 512
Acceptable
#2
B
Smile.io
by Smile.io
📦 104.75 KB
⚡ 3 ms desktop
📱 5 ms mobile ✓
Acceptable
#3
C
Growave
by Growave
📦 424.91 KB
⚡ 20 ms desktop
📱 84 ms mobile ✓
★ 4.8 1k
Heavy
#4
C
Yotpo Loyalty & Referrals
by Yotpo
📦 285.29 KB
⚡ 88 ms desktop
📱 240 ms mobile ✓
Heavy
#5
D
Yotpo Loyalty & Rewards
by Yotpo
📦 1083.96 KB
⚡ 37 ms desktop
📱 205 ms mobile ✓
📐 Layout stable
★ 4.7 941
Critical

How we measure — Each app is injected into a clean Shopify dev store in a Playwright-controlled browser with no other apps installed. V8 CPU cost is the ScriptDuration delta before and after injection. Mobile estimate applies Google Lighthouse's 4× slowdown factor.

Read the full methodology →