All cart customization apps with features for custom styles

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

499 apps with

Custom styles

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Terms and Conditions Check Box
4.8 out of 5 stars 40 total reviews • Free plan available
Add terms checkbox and require agreement before checkout
ShipInsure Shipping Protection
4.9 out of 5 stars 66 total reviews • Free
Give customers the option for a protected checkout experience
Monster Cart Upsell+ Free Gift
4.7 out of 5 stars 490 total reviews • Free plan available
Cart Upsells, Tiered discounts, Free Gift Purchase GWP + MORE
Termzy ‑ I Agree To Terms
4.7 out of 5 stars 198 total reviews • Free trial available
Add a Terms and Conditions checkbox without any hassle!
Assortion: Upsell & Bundles
4.9 out of 5 stars 313 total reviews • Free plan available
Create product bundles, volume discount, and upsell offers
Also Bought CBB
4.7 out of 5 stars 313 total reviews • Free trial available
Premium cross-sell related product recommendations
Timex Low Stock Urgency Timer
4.8 out of 5 stars 232 total reviews • Free
Urgency & FOMO low stock countdown timer bar & cart countdown
SEOWILL ‑ Sticky Add To Cart
4.9 out of 5 stars 132 total reviews • Free plan available
Formerly SEOAnt - Display Sticky Add to cart, Quick Buy Icon
Cartly Slide Cart Drawer
4.9 out of 5 stars 82 total reviews • Free plan available
Boost AOV with cart slider, cart timer & cart customization
Adoric Post Purchase Upsell
5.0 out of 5 stars 15 total reviews • Free
Raise AOV via 1-Click Checkout upsells & Thank You page upsell
Flash: Cart Drawer & Upsell
5.0 out of 5 stars 10 total reviews • Free
Free slide cart drawer with upsell, rewards bar & free gifts
Buy Me: Sticky Add To Cart Bar
4.9 out of 5 stars 152 total reviews • Free plan available
Boost sales w/ sticky add to cart bar, quick buy & sticky cart
Nitro: Upsell & Cross‑Sell
5.0 out of 5 stars 243 total reviews • Free to install
AI builds your store design; CRO tools grow your revenue
Cartify Ai cart upsells
5.0 out of 5 stars 36 total reviews • Free trial available
Cart upsells, rewards, add-ons, trust badges & alerts
CBB Shipping Rates Calculator
4.6 out of 5 stars 207 total reviews • Free trial available
Show shipping rates before checkout to reduce cart abandonment
Flex Upsell Cart Auto Discount
5.0 out of 5 stars 16 total reviews • Free plan available
Turn Every Cart into Bigger Orders with Smart Upsells
RuffRuff Order Bonus
4.9 out of 5 stars 9 total reviews • Free trial available
Boost sales with smart discounts and free gift rewards
PF: Skip To Checkout/Skip Cart
4.4 out of 5 stars 32 total reviews • Free
Instant checkout sticky add to cart Apple Pay Buy Now button
Oak Prepaid Discount
4.4 out of 5 stars 9 total reviews • Free plan available
Payment method discounts, auto-applied in cart & checkout
iCart Cart Drawer Cart Upsell
4.8 out of 5 stars 432 total reviews • Free plan available
Boost AOV with slide cart drawer, cart upsell & progress bar
Scarcity+ Countdown Timer Bar
5.0 out of 5 stars 23 total reviews • Free
Hurrify urgency: Reserve pre-checkout timer & cart timer bar
Libautech: Sticky Add to Cart
5.0 out of 5 stars 7 total reviews • Free plan available
Sticky Add to Cart Button & Bar to Reduce Cart Abandonment
HUE Cart Drawer
5.0 out of 5 stars 39 total reviews • Free
Build a cart drawer with discount code and cart upsell support
Virtue ‑ Charity Donations
5.0 out of 5 stars 48 total reviews • Free to install
Donate to UK, CA & Global Charities. Store & Customer giving.
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499 apps with

Custom styles

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