Best Cart customization apps for Shopify

Appfleece · since 2023 · Pay later

Integrate Cash on Delivery (COD) with added fees to your store. Conditionally customize payment and shipping methods seamlessly for better checkout experience.

Hitsy Apps · since 2025 · Cart customization

Grow AOV with progress bar for free shipping, discounts, gifts

CAPITALIPLY LLC · since 2017 · Checkout

Grow AOV with cart upsell, sticky add to cart & buy now button

Ecom Trend · since 2020 · Countdown timer

Countdown timer on cart page & side cart as a checkout timer

Advan Software · since 2024 · Discounts

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

Upnova · since 2022 · Upsell and cross-sell

Craft attractive upselling offers and increase your AOV

Octolize LTD · since 2023 · Cart customization

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

WizeSaaS · since 2023 · Cart customization

Quickly add to cart products from home page or collection page

Tsun Inc. · since 2025 · Discounts

Boost sales with smart discounts and free gift rewards

Upsell.com ex ReConvert · since 2018 · Cart customization

Create Cart Upsell & Cross Sell + Post Purchase Upsell Funnels

Qikify · since 2021 · Cart customization

Upsell & cross-sell with Frequently Bought Together, BOGO

In Cart Upsell · since 2015 · Cart customization

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

Code Black Belt · since 2016 · Cart customization

Premium cross-sell related product recommendations

Codexade · since 2023 · Upsell and cross-sell

Increase AOV with one click Upsell & Cross Sells

Care Cart · since 2020 · Cart customization

Urgency & FOMO low stock countdown timer bar & cart countdown

Shop Doctors 🏆 · since 2021 · Cart customization

Apply stacked discount codes on cart and promote coupon codes

Gm infotech inc · since 2023 · Upsell and cross-sell

Cart Upsell—Boost Sales with Slide Cart Drawer Offers

SnapSell (WizzCommerce) · since 2025 · Cart customization

Boost CRO w/ fast-loading slide cart drawer, cart progress bar

Pledger Giving Ltd · since 2021 · Donations

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

Ymq · since 2024 · Upsell and cross-sell

Slide Cart with Reward Bar & Upsell & Add-on To Increase AOV