Best Checkout apps for Shopify

Essential Bundles & Upsells · since 2024 · Cart customization

Lift AOV with Frequently Bought Together Upsell and Cross-sell

506 · since 2019 · Cart customization

Delight customers by adding targeted gifts to their carts

Kaching Bundles & Upsells · since 2024 · Upsell and cross-sell

Boost your AOV: slide cart, upsell cart & free shipping bar

Essential Apps · since 2022 · Cart customization

Lift AOV via Free Shipping Bar Goal Cart Upsell and Cross Sell

AOV.ai · since 2025 · Checkout

Slide cart drawer with cart upsell, rewards & free shipping

App HQ Pte. Ltd. · since 2019 · Cart customization

Add slide cart to boost AOV with upsells & free shipping bar

Essential Apps · since 2025 · Cart customization

Lift AOV via Slide Cart Upsell, Sticky Add to Cart, Reward Bar

E-TRADE PARTNER · since 2024 · Checkout

Seamlessly customize your checkout with powerful custom rules

Kaching Bundles & Upsells · since 2024 · Checkout

Boost AOV via 1-click Checkout upsells & Thank You page offers

E-TRADE PARTNER · since 2024 · Cart customization

Hide, sort, reoder, rename payment methods with payment rules

HeroSoftware GmbH · since 2025 · Checkout

Payment rules for better conversion rate: hide, sort & rename

StoreSpark · since 2023 · Cart customization

Customize checkout behavior with conditional powerful rules

Square Apps · since 2024 · Checkout

Keep the Sticky Add to Cart Bar visible on scroll to boost AOV

Plus Apps · since 2022 · Upsell and cross-sell

Customize Checkout Page & Thank You Page + Upsells, Free Gifts

Stitch Express · since 2025 · Checkout

Built for merchants in South Africa to optimise checkout

Opus Team · since 2024 · Checkout

Boost Sales w Slide cart drawer, Rewards bar, Free Gifts, etc

Effective Apps · since 2019 · Cart customization

Terms and Conditions Checkbox: Age verification checkout rules

Bundler.app · since 2022 · Cart customization

Auto add to cart a gift with purchase, BOGO, buy X get Y, etc.

Qikify · since 2019 · Checkout

Add slide cart drawer, sticky cart, progress bar, cart upsell

ORICHI · since 2019 · Discounts

Set Quantity Discount, Minimum Order Quantity, Volume Discount