Side-by-side comparison

CustomFit AI A/B Testing & CRO vs Essential Upsell & Cross Sellfor Shopify (2026)

A detailed comparison of CustomFit AI A/B Testing & CRO and Essential Upsell & Cross Sell to help you pick the right Shopify app for your store.

5.0 ★

CustomFit AI A/B Testing & CRO

5.0 ★

Essential Upsell & Cross Sell

Shared Category

Upsell and cross-sell

At a Glance

5.0

14 reviews

5.0

1,004 reviews

No-code A/B Testing and Website Personalization CRO platform built for marketers

5.0

14 reviews

AI Conversion Optimization: Leverage Machine Learning to optimize conversions
No code, A/B Testing, Split URL testing, Theme A/B testing, and A/B/N testing
Easy to use No code visual editor to personalize product pages & landing pages
Add new blocks like Video Reels, Recently Viewed items, and more via drag-n-drop
SEO-friendly with fast performance and a flicker-free experience.

One click upsell and cross sell. Show frequently bought together product upsell & related products.

5.0

1,004 reviews

Show frequently bought products (FBT), related products, product recommendations
Post purchase upsell & cross sell: Product addons, bought together bundles
Automatic discount promotions: Add discounts to upsell & "also bought" products
Product page upsell: Add one click upsell & cross-sell products & BOGO bundles
Cart upsell: Add upsell cart app, cross-sell & product add-ons to cart drawer

FixMyStore

Run audits for SEO, CRO, PageSpeed, and AI visibility. Get a clear report and actionable fixes.