Best Checkout App for Shopify

Running an online store involves various moving parts, but perhaps the most important aspect is your checkout process. If your checkout is complicated, slow, or confusing, it could cause shoppers to leave their carts behind.

For sellers using Shopify, there are specialized “checkout apps” that can simplify this critical step and boost your sales. These tools often provide extra features like upselling, customizable payment options, quick add-to-cart functions, or post-purchase offers that are not always built into the standard Shopify interface.

By choosing a checkout app that fits your store’s style and audience, you can offer customers a smoother shopping experience, encourage more conversions, and even increase your average order value. Below, we’ll examine the main ideas behind checkout apps and highlight some of the most popular Shopify checkout apps to consider.

What It Is

A “checkout app” is a software tool you integrate into your Shopify store to add or modify the final stages of a shopper’s process. Typically, Shopify has a default checkout process. However, many merchants prefer extra flexibility and features.

That is where dedicated apps come in. These apps can modify your cart, offer product suggestions, show shipping rates more clearly, or even implement special rules like order limits.

Rather than simply using a basic checkout, a checkout app can help you include more advanced functionality. For example, you might want a sticky cart button that follows your customers as they scroll, or a pop-up cart drawer instead of sending them to a whole new page.

Each app provides its unique collection of tools to improve the buyer’s experience and potentially boost sales.

What Are Key Aspects

• Usability: A good checkout app should be simple both for you and for your customers. Shoppers should be able to pay without searching for options.
• Customization: Different stores have different needs. Whether it is language translation, color schemes, product upsells, or disclaimers, your app should offer suitable customization.
• Compatibility: Make sure the app works smoothly with Shopify themes, payment gateways, and other apps you already use.
• Pricing: Checkout apps come in various price ranges. Some offer free plans or trials, while others charge monthly or usage-based fees. Always check the cost and see what is included.
• Performance: Checkout speed and reliability are essential. A poorly optimized app could slow down your store, so opt for a solution known for its performance and frequent updates.

Below is a curated list of 10 Shopify checkout apps that might be helpful. Each one fills a slightly different niche, so consider your store’s specifics when deciding which is the best fit.

10 Best Checkout Apps for Shopify

1. Qikify Slide Cart, Sticky Cart (Best for: Minimalist carts in a slide-out style)

qikify Slide Cart, Sticky Cart changes your store’s shopping cart into a slide-out panel, allowing customers to review their items without leaving the current page. That convenience can help reduce cart abandonment. It also adds a sticky “Add to Cart” button that remains visible as a visitor scrolls down.

This plugin is designed to integrate with multiple Shopify themes and provides basic options to easily match your store’s appearance.

Pricing: Free plan available, with additional premium features.

PROS

• Easy setup with a slide-out panel that keeps shoppers on the same page
• Sticky Add to Cart button improves visibility
• Good basic design customization

CONS

• May need an upgrade for advanced features
• Some design aspects might require extra tweaks to match certain themes

Best for: Stores wanting a tidy, minimalistic cart that does not distract or require extra navigation, especially shops that prefer a slide-out cart experience.

2. AfterSell Post Purchase Upsell (Best for: Offering last-minute deals after checkout)

AfterSell Post Purchase Upsell focuses on increasing your average order value by offering relevant upsells or add-ons immediately after a customer checks out.

Instead of presenting product suggestions earlier in the buying process, where they might distract or slow checkout, this tool tries to capture the buyer’s attention right after a successful purchase. This can be an effective way to present related products or limited-time upgrades.

Pricing: Free plan available, with tiered paid plans for more advanced features and higher upsell funnels.

PROS

• Makes use of a high-conversion moment right after purchase
• Saves upsell prompts for after checkout to avoid interrupting the payment process
• Provides simple tracking of upsell performance

CONS

• May need careful planning to avoid overwhelming buyers
• Not everyone wants additional offers immediately after making a purchase

Best for: Merchants who wish to increase order size by presenting extra offers without complicating the main checkout process.

3. Minmaxify Order Limits (Best for: Ensuring minimum or maximum purchase rules)

Minmaxify Order Limits is a practical tool if you need to control how many items shoppers can add to their cart.

You might want to enforce a minimum order amount, or limit the number of a specific product per purchase. By enabling you to set these rules, the app helps avoid challenges like selling out of limited products too quickly or handling unprofitable small orders.

Pricing: Free trial available, then paid plans may apply based on ongoing usage.

PROS

• Helps maintain consistent order sizes
• Prevents customers from accidentally exceeding inventory limits
• Suitable for wholesalers who require bulk purchase restrictions

CONS

• May discourage smaller buyers if minimum orders are too high
• Needs regular monitoring if you add or remove products frequently

Best for: Wholesalers, bulk-oriented shops, or stores that need to keep order quantities within certain limits for profitability or legal reasons.

4. TnC: Terms and Conditions Box (Best for: Businesses needing clear checkout consent)

TnC: Terms and Conditions Box is a straightforward tool for shops that require explicit customer consent at checkout.

With this app, you can display a checkbox that requires customers to agree to your store policies, age restrictions, or disclaimers before finishing a purchase. Its clear interface ensures there is no confusion about the rules the buyer is accepting.

Pricing: Free to install, with optional paid add-ons or features.

PROS

• Quick setup that adds a necessary checkbox at checkout
• Can help reduce disputes by recording customer confirmation
• Flexible enough for various policy types (return policy, age verification, etc.)

CONS

• Too many disclaimers may discourage some buyers
• Mainly serves a compliance purpose, not directly boosting revenue

Best for: Stores that need customers to accept specific policies or those selling regulated products, providing a clear record of agreement.

5. Uplinkly Sticky Cart (Best for: Keeping the cart visible for on-the-go shoppers)

Uplinkly Sticky Cart provides a way to keep your cart button constantly visible as customers scroll through product pages.

This convenience minimizes steps during the purchasing process—shoppers do not have to scroll to the top of the page or search for the cart icon. The app can be adjusted to match your store’s color scheme and text, ensuring the sticky cart fits naturally into your design.

Pricing: Free plan available, with premium plan options if additional features are needed.

PROS

• Makes checkout options immediately accessible
• Simple design that is easy to customize for your theme
• Can help reduce cart abandonment by simplifying the route to checkout

CONS

• Offers limited advanced upsell functionality
• May conflict with certain page elements if not carefully positioned

Best for: Shops that want to keep the cart button in clear view for both mobile and desktop users.

6. UpCart – Cart Drawer Cart Upsell (Best for: Adding upsell offers within the cart drawer)

UpCart – Cart Drawer Cart Upsell converts your standard cart page into a slide-out cart drawer that also presents upsell suggestions. When a shopper clicks the cart icon, a small panel appears showing their items along with related product recommendations.

This is a neat way to remind customers about accessories or upgrades before they move on to payment.

Pricing: Free plan available, with paid tiers for additional advanced features.

PROS

• Smooth drawer interface avoids redirecting to a new page
• Includes built-in upsell modules that can boost order totals
• Can be adapted to work with a range of store themes

CONS

• Could conflict with some custom-coded themes
• Advanced settings might require a premium plan

Best for: Stores that want to display extra product suggestions without moving customers away from the primary shopping area.

7. One Click Upsell – Zipify OCU (Best for: AI-driven upsells and cross-sells)

One Click Upsell – Zipify OCU focuses on getting a bit more from each sale. It uses features that support upsells and cross-sells in a straightforward funnel that occurs before, during, or after checkout.

The app also uses AI insights to help tailor offers to different customer groups, aiming to maximize conversions without overwhelming buyers.

Pricing: Free trial available, with a subscription fee after the trial.

PROS

• Provides multiple opportunities for upsell offers
• AI-based recommendations can cater to unique shopper behaviors
• Offers flexible customization for product pages and messages

CONS

• Setting up testing funnels might require some time
• The full benefits typically come with a paid subscription

Best for: eCommerce brands looking for data-driven methods to increase cross-selling and upselling throughout the buying process.

8. Checkout Blocks (Best for: Customizing the Checkout and Thank You pages)

Checkout Blocks lets you visually adjust the final stages of the checkout process, including adding trust badges, shipping progress indicators, and custom messages. It offers a drag-and-drop editing experience so that non-developers can make changes without altering the store’s code.

You can also insert elements on the Thank You page to give customers more details or ways to continue engaging with your brand.

Pricing: Free, with possible add-on fees for extra modules.

PROS

• Easy drag-and-drop customization, suitable for non-coders
• Allows adding elements to both Checkout and Thank You pages
• Helps build trust and maintain brand consistency in the closing steps of a purchase

CONS

• Very advanced designs might require some coding help
• Overly busy checkout layouts can sometimes make buyers hesitate

Best for: Shop owners who want more control over the final pages of the buying process, including the post-purchase experience, without needing to work with code.

9. EG Auto Add to Cart Free Gift (Best for: Creating attractive buy-X-get-Y promos)

EG Auto Add to Cart Free Gift automates adding a free gift to a shopper’s cart when certain conditions are met—like spending a specific amount or buying targeted items. This feature can boost promotion campaigns without requiring extra effort from the customer.

Setting thresholds like “free mug with orders over $50” is straightforward. Shoppers notice the automatically added item in the cart, which can be a pleasant surprise.

Pricing: Free trial available, with paid options if you need more advanced rules or larger volumes.

PROS

• Simple promotional tactic that customers appreciate
• Automatic gift addition can encourage higher cart totals
• Easy to set up thresholds based on quantity or order value

CONS

• Requires careful planning to avoid overspending on free gifts
• Overuse may reduce the perceived value of your products

Best for: Stores that use gift-with-purchase strategies or run short-term promotions to boost larger orders.

10. Buy Button channel (Best for: Selling on external websites or blogs)

Buy Button channel allows you to embed a Shopify-based purchase button on other sites or blogs. Instead of redirecting prospective customers away from the content they’re reading, you let them buy your product right then and there with only a few clicks.

This is particularly useful if you run multiple sites, maintain an active blog, or often share product links on external platforms.

Pricing: Free to use, with no monthly fee specifically for this feature.

PROS

• Ideal for selling on a blog or integrating with content marketing
• Provides a streamlined buying experience without needing a complete store page
• Unifies product listings across multiple URLs

CONS

• Offers less styling flexibility compared to a full Shopify storefront
• More limited when incorporating advanced checkout features outside of Shopify

Best for: Artists, bloggers, or small brands looking to sell directly through posts or external websites without making readers switch to a separate storefront.

Shopify Checkout Apps Comparison Table

Choosing the right checkout app can improve your customers’ shopping experience and help boost your sales. Below is a comparison of some of the best Shopify checkout apps and their key features.

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This table showcases different Shopify checkout apps, highlighting what they are best used for and their key selling point.

FAQ on Shopify Checkout Apps

Shopify checkout apps help streamline the purchasing process, improve conversions, and introduce additional features that the default checkout lacks. Below, we answer common questions about these apps.

What are Shopify checkout apps?

Shopify checkout apps are tools designed to improve or customize the checkout experience on Shopify stores, such as adding upsells, limiting purchases, or embedding checkout buttons on external sites.

Why should I use a checkout app?

A checkout app can help reduce cart abandonment, offer customized promotions, enhance user experience, and even increase the average order value by giving customers smoother and more engaging checkout options.

Are these apps free to use?

Many Shopify checkout apps offer free plans with limited features, but more advanced functions typically require a subscription or usage-based fees, so it’s best to review pricing before committing.

Can I use multiple checkout apps at once?

Yes, but compatibility is key—some apps may not function well together if they modify the same checkout elements, so testing different combinations is recommended.

Do checkout apps slow down my store?

Poorly optimized apps can impact page speed, but most well-reviewed checkout apps prioritize efficiency and performance to ensure minimal slowdown.

How do upsell checkout apps work?

Upsell apps present additional products or upgrades at different stages, such as before checkout, during checkout, or after a customer completes a purchase, to encourage higher spending.

What if a checkout app doesn’t work with my theme?

Most Shopify apps integrate well with major themes, but if an issue arises, you may need developer assistance or check for an alternative app better suited to your theme.

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