Best Checkout apps for Shopify

Apps On Demand · since 2020 · Affiliate programs

Helps to increase sales by adding external links buttons.

Keylay Apps · since 2022 · Upsell and cross-sell

Customize checkout page with custom blocks, upsells, and rules

Nextools · since 2024 · Order limits

Block or validate orders in product, cart and checkout page

Octolize LTD · since 2023 · Orders and shipping

Sort, reorder, rename, hide shipping rates with checkout rules

pifyapp · since 2020 · Checkout

Add unlimited cart fields/cart attributes, terms on cart page

Growthpolis · since 2024 · Cart customization

Function Creator for Automatic Discounts, Order limits, Promos

MageComp · since 2022 · Inventory optimization

Restrict purchasing of incompatible products together

Tsun Inc. · since 2025 · Marketing and conversion

Boost sales with smart discounts and free gift rewards

Effective Apps · since 2019 · Store management

Add prop 65 product labels & badges on add to cart & checkout

SamiSales by Samita · since 2025 · Order limits

Set order limits by product, customer tag, or cart value

Uptek · since 2025 · Cart customization

Persistent cart sync across all devices. Install and forget.

Upsell.com ex ReConvert · since 2018 · Marketing and conversion

Create Cart Upsell & Cross Sell + Post Purchase Upsell Funnels

Rokt · since 2019 · Marketing and conversion

Boost AOV and increase sales with Aftersell — the leading Shopify app for post-purchase and checkout upsells. 1-click offers, easy setup, proven results.

Qikify · since 2021 · Upsell and cross-sell

Upsell & cross-sell with Frequently Bought Together, BOGO

In Cart Upsell · since 2015 · Upsell and cross-sell

Boost AOV w/ In Cart Upsell, Cross-Sell & Post Purchase Upsell

Kedra Apps · since 2025 · Checkout

Hide, rename, reorder & validate payment & shipping methods

Code Black Belt · since 2016 · Upsell and cross-sell

Premium cross-sell related product recommendations

Care Cart · since 2020 · Cart customization

Urgency & FOMO low stock countdown timer bar & cart countdown

Intillium · since 2012 · Order limits

Set product and collection limits on your cart

Gm infotech inc · since 2023 · Cart customization

Cart Upsell—Boost Sales with Slide Cart Drawer Offers