Shopify apps for the cart

The cart is where sales get lost. We fix it.

Three small apps that show shoppers shipping, discounts and gifts before they think about leaving.

By the numbers

Rated by merchants, not by us

4.86★

Average rating across all three apps

345

Merchant reviews on the Shopify App Store

5+ yrs

Building cart apps, continuously maintained

Pulled from the Shopify App Store. These move — we keep the page honest rather than round.

The apps

Built for the cart, built to work together

Every app solves one job on the cart page. Install one, or run all three — they share the same architecture, so they don’t collide.

Dr Stacked Discounts on Cart

4.9 ★ · 177 reviews · From $4.99/month

Accepts discount codes right on the cart page and shows the savings before checkout. Stacks multiple codes, applies them automatically, and tracks progress toward free shipping.

  • Discount Field In Cart Summary
  • Fully Customizable Stacked Discounts
  • Many Stacked Automatic Volume Discounts
  • Shipping Estimation In Cart Summary
  • Free Shipping Bar In Cart Summary
  • Standalone Discount Field Widget
  • Floating Discount Icon Widget
  • Promotional Popup For Coupons and Deals

Dr Cart Shipping Rates & Rules

5.0 ★ · 69 reviews · From $3.99/month Built for Shopify

Calculates real shipping rates on the cart by product, postal code, weight, dimension or distance — and detects the customer’s location automatically.

  • Display Shipping Rates In Cart Summary
  • Instant Rates Using IP Geolocation
  • Unlimited Custom Shipping Rules
  • Tiered & Incremental Rate Calculation
  • Distance & Location Based Rates
  • Carrier-Based Rates: UPS, USPS, FedEx, Canada Post and more
  • Promote Multiple Free Shipping Tiers
  • Bulk Add & Edit Rules Using Excel

Dr Free Gift, BOGO Buy X Get Y

4.7 ★ · 99 reviews · From $9.99/month

Adds free products to the cart automatically when shoppers hit the goals you set — cart value, quantity, specific products — and shows them what they’ve earned.

  • Automatic Free Products On Cart/Drawer
  • Customer-choice or Optional Free Gifts
  • Progress Bar Widgets for Goal Promotion
  • Floating Goals Slider Widget Promotion
  • Floating Popup Promotion for All Goals
  • Discount Code & Free Shipping Goals
  • Custom Requirements For All Goals

Every paid app includes a 14-day free trial and runs free on development stores — billing only starts when the store goes live.

Support

Support that actually answers

Every app installs on your own, in minutes. When something does go wrong, the team that builds the apps is the team that answers — and across all three, support is what merchants mention most in reviews.

  • Set it up yourself in minutes — guided installers, no code and no developer.
  • Email and live chat — reach the developers, not a ticket queue.
  • Custom theme work — we fix conflicts with your existing apps.
  • Free on development stores — pay only once the store goes live.

Merchant reviews

What merchants say

Verified five-star reviews from the Shopify App Store, newest first.

Excellent app and outstanding customer support! The team was extremely helpful, responsive and provided a quick, effective solution to our issue. Everything works perfectly now.
BTTR4 Cleaning Germany · Free Gift, BOGO
Great app — easy setup and outstanding customer support. They truly take the time to help and make sure everything is perfect. A+ experience.
Tote&Carry United States · Cart Shipping Rates
Wow, TOP NOTCH customer service! The response time is super fast and the detailed replies are not AI generated. Great app, and great team to support it!
MIXOLOGIE United States · Free Gift, BOGO
A very useful app for achieving many variations of stacked discounts and also exclusions. Support is also very prompt and helpful.
Great Garden Plants United States · Stacked Discounts on Cart
Nice app, good customer service and quick response.
LabCart Life Science Germany · Cart Shipping Rates

Read all 345 reviews on the Shopify App Store →

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