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ExtensionKit ‑ Custom Checkout icon

ExtensionKit ‑ Custom Checkout

Customize your checkout and create advanced discount rules

by Maverick Apps · Launched: September 2024 · Free plan available.

5.0 (1) on Shopify
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Enhance your Shopify checkout with Extension Kit! Drive revenue with upsells, custom fields, drag-and-drop edits, advanced discounts, and more.

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About ExtensionKit ‑ Custom Checkout

Unlock the full potential of your Shopify checkout with Extension Kit. Generate revenue with product upsells and subscription upgrades, and collect additional information from customer's with custom fields. Easily customize checkout pages using drag-and-drop blocks for banners, images, and informational text. Customizable for all of your customer's with Shopify Markets. Advanced discounts powered by Shopify Functions. Checkout customizations built for Shopify Plus plans only.

Last verified: August 9, 2026 · Fresh

App details

Developer
Maverick Apps
Pricing
Free plan available
Launched
September 2024
Rating
5.0 (1) on Shopify

Key features

  • Content and upsell checkout extensions
  • Advanced discount
  • Cart validations
  • Checkout branding editor
  • Email support
Integrations with:

Checkout

4 plans · starts free · 14-day free trial

Startup

Free

Small Business

$19.99/month

Growth

$49.99/month

Enterprise

$99.99/month

Plans and prices as listed on the Shopify App Store.

Ratings & reviews

based on 2 Shopify App Store reviews

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We use this app daily to showcase a variety of products, and the product upsell feature has been a game changer! It made adding relevant products at checkout effortless, and since utilizing this app we have seen a major boost in sales. The setup was quick, everything runs smoothly, and the upsells feel natural and not pushy. It has been a great way to show customers products that can complete thei...
— GALLERY DEPT.
The Extension Kit app has really helped with transitioning to the new checkout. It made the whole process a lot simpler and has been useful for migrating away from Shopify's Script Editor app. It's saved our team a ton of time, and I’d definitely recommend it to anyone using Shopify Plus!
— Pura Vida Bracelets

Overview 1 / 2

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