All cart customization apps with features for additional fees

Add a "buy now" button, sticky add to cart, or whatever else helps customers complete their purchase.

371 apps with

Additional fees

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Essential Upsell & Cross Sell
5.0 out of 5 stars 1508 total reviews • Free plan available
Lift AOV with Frequently Bought Together Upsell and Cross-sell
Essential Free Shipping Upsell
5.0 out of 5 stars 525 total reviews • Free plan available
Lift AOV via Free Shipping Bar Goal Cart Upsell and Cross Sell
Kaching AI Slide Cart Drawer
5.0 out of 5 stars 324 total reviews • Free plan available
Boost AOV with upsell, cart discounts, free shipping bar, etc.
EG Auto Add to Cart Free Gift
5.0 out of 5 stars 841 total reviews • Free trial available
Delight customers by adding targeted gifts to their carts
ETP Sort Hide Payment Methods
5.0 out of 5 stars 160 total reviews • Free
Hide, sort, reoder, rename payment methods with payment rules
Opus Cart Upsell Cart Drawer
4.9 out of 5 stars 449 total reviews • Free plan available
Boost Sales with Free Shipping Bar and Free Gift in slide cart
Upcart—Cart Drawer Cart Upsell
4.7 out of 5 stars 663 total reviews • Free plan available
Add a Slide Cart with a Free Shipping Bar & Upsell Cart Widget
Square: Sticky Add to Cart Bar
5.0 out of 5 stars 88 total reviews • Free
Reduce abandonment by having the Sticky Bar always visible
Kaching Post Purchase Upsell
5.0 out of 5 stars 98 total reviews • Free plan available
Personalized one click upsell, thank you page, checkout upsell
AOV.ai Slide Cart Drawer
5.0 out of 5 stars 100 total reviews • Free
Slide-out cart drawer with quick loading, modern checkout
One Click Upsell ‑ Zipify OCU
4.6 out of 5 stars 438 total reviews • Free plan available
Increase AOV with AI post-purchase upsells & checkout upsells
EA • Cart Drawer Cart Upsell
5.0 out of 5 stars 95 total reviews • Free
Grow via Slide Cart Drawer, Cart Upsell Sticky Add to Cart Bar
AMP Slide Cart Drawer
5.0 out of 5 stars 504 total reviews • Free plan available
Boost AOV with cart upsell offers & free shipping bar
CartBot: Gift with purchase
4.9 out of 5 stars 446 total reviews • Free plan available
Auto add to cart a gift with purchase, BOGO, buy X get Y, etc.
Essential Sticky Add to Cart
5.0 out of 5 stars 201 total reviews • Free
Lift CRV with Sticky Cart: Add to Cart Bar, Quick Buy Button
Qikify Slide Cart Drawer
4.9 out of 5 stars 412 total reviews • Free plan available
Add Slide Cart Drawer, Cart Upsell offers & Sticky Add to Cart
TnC: Terms and Conditions Box
4.9 out of 5 stars 444 total reviews • Free plan available
Boost security and age verification compliance in 1 click
BeSure Checkout Rules
5.0 out of 5 stars 176 total reviews • Free plan available
Customize checkout behavior with conditional powerful rules
XB: AI Cart Upsell Cart Drawer
5.0 out of 5 stars 161 total reviews • Free plan available
Slide Cart with Free Shipping Bar, Free Gift & Product Add-ons
Payflow: COD & Payment Methods
4.8 out of 5 stars 114 total reviews • Free plan available
Charge a fee for Cash on Delivery orders & customize checkout
iCart Cart Drawer Cart Upsell
4.8 out of 5 stars 393 total reviews • Free plan available
Add slide cart drawer with in cart upsell & free shipping bar
Kip: Sort Hide Payment Methods
4.9 out of 5 stars 73 total reviews • Free plan available
Take full control of payment methods with Kip customizations.
Rebuy Personalization Engine
4.8 out of 5 stars 773 total reviews • Free plan available
AI recommendations: cart, checkout, and post-purchase upsells
Snap Cart Drawer Progress Bar
4.8 out of 5 stars 36 total reviews • Free
Boost CRO w/ fast-loading slide cart drawer, cart progress bar
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