Best Checkout apps for Shopify

UpsellPlus · since 2021 · Checkout

Grow AOV with cart, checkout, post purchase and POS upsells

Appfleece · since 2023 · Selling products

Add Cash on Delivery fees, customize payment or delivery methods, and create checkout validations using rules based on cart, customer, product, address and more

Plus Apps · since 2022 · Upsell and cross-sell

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

Craftly · since 2025 · Discounts

Customize checkout rules to drive sales and reduce risk

Advan Software · since 2024 · Promotions

Boost conversions/AOV with auto-added free gifts and upsells.

SCALA · since 2024 · Marketing and conversion

Offer payment discounts & prepaid discounts during checkout

Shop Doctors 🏆 · since 2021 · Checkout

Control shipping rates by product, zip, distance and more

VOL Apps · since 2026 · Pricing

Add Surcharges, Fees & Tariffs to Checkout, Cart, POS & Orders

Checkout Components · since 2023 · Upsell and cross-sell

Segmented checkouts and upsells that drive more revenue

CartyLabs · since 2021 · Cart customization

Boost Sales with In-Cart Upsells, Free Gifts, Rewards & Deals

Identixweb Limited · since 2017 · Orders and shipping

Allow customers to reorder or repeat past orders in 1-click

Pledger Giving Ltd · since 2021 · Customer loyalty

Donate to UK, CA & Global Charities. Store & Customer giving.

GEFA Technology · since 2024 · Upsell and bundles

Boost AOV with upsells, free gifts, progress bar & urgency.

Puco.io · since 2022 · Selling products

Customize checkout using 50+ powerful rules and conditions

Magical Apps · since 2024 · Checkout

Address Validator App for Checkout Validation. Stop Bad Orders

Shiprocket · since 2025 · Marketing and conversion

Customizable cart with milestone rewards and upsell offers

WizzCommerce · since 2025 · Marketing and conversion

Boost CTR by sticky add to cart button, buy now button

HUE – A Helixo Company · since 2022 · Upsell and cross-sell

Build a cart drawer with discount code and cart upsell support

Code57 · since 2024 · Cart customization

Build no-code rules to control checkout, shipping & payments

Spikecom group FZCO · since 2025 · Checkout

Cart upsells, rewards, add-ons, trust badges & alerts