Best Checkout apps for Shopify

Essential Apps · since 2022 · Cart customization

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

AOV.ai · since 2025 · Upsell and cross-sell

Slide cart drawer with cart upsell, rewards & free shipping

Watermelon · since 2025 · Order limits

Set MOQ (Minimum Order Quantity), Order Limit & Checkout Rules

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

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

HeroSoftware GmbH · since 2025 · Checkout

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

Square Apps · since 2024 · Cart customization

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

Cirkle Studio LLC · since 2023 · Cart customization

Control your shipping rates by multiple conditions at checkout

Plus Apps · since 2022 · Upsell and cross-sell

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

SCALA · since 2024 · Discounts

Offer payment method based discounts during checkout

Tsun Inc. · since 2024 · Order limits

No‑code limits for quantity and price to prevent errors

Stitch Express · since 2025 · Checkout

Built for merchants in South Africa to optimise checkout

Opus Team · since 2024 · Upsell and cross-sell

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

Bundler.app · since 2022 · Discounts

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

Assortion · since 2021 · Cart customization

Create product bundles, volume discount, and upsell offers

Corner: Referrals, Upsell & Rewards · since 2019 · Product bundles

Slide cart drawer with free gift with purchase and cart upsell

Blockify · since 2024 · Order limits

Checkout rules, checkout customizer and discounts to boost AOV

Mason · since 2020 · Cart customization

Engage, convert & upsell anonymous visitors with 30+ playbooks

EasyApps · since 2024 · Cart customization

Grow via Slide Cart Drawer, Cart Upsell Sticky Add to Cart Bar

Madgic · since 2024 · Order limits

Set MOQ (Minimum Order Quantity), Product Limit, Cart Limits

Syncube 🥇 · since 2020 · Discounts

Boost sales with cart discounts & free shipping bar