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🔬 Lab Findings 🔧 Stack Builder

Forms Apps for Shopify — Performance Ranked

3 benchmarked forms, quizzes, and customer surveys apps, ranked by real JavaScript overhead measured in StackConflict's clean-room lab.

3 Apps benchmarked
2 Grade A or B
28 ms Avg CPU cost
112 ms Avg mobile CPU
★ 5.0 Avg merchant rating
FASTEST

Decify is the lightest forms, quizzes, and customer surveys app we've tested — 140.41 KB payload and 11 ms CPU (Grade B).

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#1
B
Decify
by Decify
📦 140.41 KB
⚡ 11 ms desktop
📱 31 ms mobile ✓
Acceptable
#2
B
Typeform
by Typeform
📦 61.74 KB
⚡ 5 ms desktop
📱 25 ms mobile ✓
★ 5 4
Acceptable
#3
C
Custom Form Builder by Websyms
by Websyms IT Solutions
📦 325.89 KB
⚡ 69 ms desktop
📱 220 ms mobile ✓
Heavy

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 →