All cart customization apps with features for custom css

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

376 apps with

Custom CSS

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Slide Carty ‑ Upsell & Gift
4.9 out of 5 stars 33 total reviews • Free plan available
Integrate a SlideCart Upsells/Cross-sells & Rewards and more
Zotasell: AI Upsell‑Cross Sell
5.0 out of 5 stars 35 total reviews • Free trial available
Boost AOV, cross sell & upsell app, AI product recommendations
Cartix Cart Discount + Upsell
4.9 out of 5 stars 48 total reviews • Free trial available
Slide cart with in cart upsell, cart discount code & more!
CheckoutFlow‑Hide Sort Rename
5.0 out of 5 stars 8 total reviews • Free to install
Hide, sort, and rename payment and shipping methods easily
CRO Cart Drawer & Free Gifts
4.9 out of 5 stars 20 total reviews • Free trial available
Free Gifts, Upsells with Rules, Progress Bar, Speed Optimized
Llama: Cart Drawer & Upsells
5.0 out of 5 stars 11 total reviews • Free trial available
Boost AOV with Cart Drawer Upsells, BOGO Deals & Gift Offers
BlueCart ‑ Upsell Progress Bar
5.0 out of 5 stars 18 total reviews • Free trial available
Product upsell, progress bar & free shipping bar to boost AOV
Reorder Master ‑ Repeat Orders
5.0 out of 5 stars 56 total reviews • Free plan available
Bulk reordering and repeat orders from past orders in 1-click
ModeMagic ‑ Store Conversions
4.9 out of 5 stars 268 total reviews • Free to install
Engage, convert & upsell anonymous visitors with 30+ playbooks
Yaco Progress Bar
4.7 out of 5 stars 16 total reviews • Free plan available
Boost cart value with rewards shown in a progress bar
Nex Minimum Order Quantity MOQ
4.9 out of 5 stars 12 total reviews • Free trial available
Reliable Min/Max Limits & Checkout Validation
GA Buy Now Button‑Buy Button
4.5 out of 5 stars 52 total reviews • Free to install
Use Sticky add to Cart to minimize abandonment & boost sales!
CBB Shipping Rates Calculator
4.6 out of 5 stars 224 total reviews • Free plan available
Show shipping rates before checkout to reduce cart abandonment
Dynamatic Cart & Upsell Engine
5.0 out of 5 stars 26 total reviews • Free plan available
Customizable slide cart, upsells, discounts, bundles, and more
PF: Buy Now Skip Cart Checkout
4.1 out of 5 stars 25 total reviews • Free plan available
Boost Christmas with Apple Pay buy now button instant checkout
Termzy ‑ I Agree To Terms
4.7 out of 5 stars 208 total reviews • Free trial available
Add a Terms and Conditions checkbox without any hassle!
Supercart
5.0 out of 5 stars 32 total reviews • Free to install
High Converting AI Slide Carts w/ Self-Insurance Upsells Gifts
Vista Checkout Rule & Discount
4.8 out of 5 stars 6 total reviews • Free plan available
Boost AOV with Automatic Discounts, Checkout Order limit rules
Quick Quote
5.0 out of 5 stars 56 total reviews • Free trial available
Let your customers request quotes through your cart.
Required: Cart page fields
5.0 out of 5 stars 8 total reviews • Free trial available
Request the information you need to fulfill your orders.
ShipInsure Shipping Protection
4.3 out of 5 stars 50 total reviews • Free
Give customers the option for a protected checkout experience
Vanga AI Post Purchase Upsell
5.0 out of 5 stars 41 total reviews • Free trial available
Boost conversion rates, sales & AOV with AI upsell app
Advance Reorder ‑ Repeat Order
5.0 out of 5 stars 55 total reviews • Free plan available
Allow users to repeat past orders or reorder items instantly
AfterShip Personalization
4.6 out of 5 stars 58 total reviews • Free to install
Boost sales w/ in product, cart, checkout page & post purchase
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