6 Free Shopify Checkout Upsell Apps with Quick Demo (2025)

Increasing your average order value (AOV) is a key goal for any e-commerce store. One proven way to do this is by Shopify checkout upsell.

Suggesting complementary products during checkout is a great way to do this, because your customer is already in a buying mode. According to Shopify, upselling is a great way to boost AOV. 

In this article, I’ve put together a list of the best free checkout upsell apps for Shopify. Each app comes with its own strengths, and I’ve included details like ratings, reviews, active store installs, and pricing wherever it was available.

Now, a quick note, some of these free apps don’t have reviews yet or the “Built for Shopify” badge. But since they’re free, I still think they’re worth giving a try. Plus, I’ve only included apps that I was actually able to install and test on my own dev store, so you’re not just getting random names off a list. 

By the end of this, you’ll have a clear idea of which Shopify checkout upsell app could be the right fit for your store.

Free Shopify Checkout Upsell Apps compared

6 Shopify checkout upsell apps (Fully free and free plan)

• Cart buddy
• BOGOX
• Selleasy
• Qikify checkout customizer 
• C builder - Checkout Plus
• Checkout plus

Fully free Shopify checkout upsell apps

1. Cart buddy

What I think about Cart buddy

One of the apps I’ve tried for Shopify checkout upsell is Cart Buddy. What stood out to me is how simple it is to use, no coding needed at all. The interface is really straightforward, and setting up an offer just takes a few clicks.

Here’s what you can do with it:

Offer Priority: Decide which offer should show up first.

Widget Text Customization: Edit the text so it matches your store’s branding and tone.

Display Options: Choose how and where the offer appears to customers.

Product Selection: Pick the products that will trigger the offer and the products you want to promote.

Flexible Rules: Apply different rules to control exactly when and how the offer is shown.

The app is still developing, and they’re actively rolling out new features. The next one in line is Analytics, which will give you even more insights.

2. BOGOX Upsell BOGO & Free gift

What I think about BOGOX Upsell BOGO

Another free Shopify checkout upsell app I’ve tried is BOGOX Upsell BOGO. What I really liked about this app is how easy it is to set up - the whole process is quick and straightforward.

Here are some of the features that stood out to me:

Easy Setup: The interface is simple, and creating offers doesn’t take much time.

Multiple Page Options: You can choose exactly which page you want the upsell offer to appear on.

Offer Flexibility: Decide how you want to structure the offer and whether or not you want to include discounts.

Custom Rules: Set conditions and rules for when and how the offer should apply.

Built-In Translations: Translate widgets into your store’s language easily, just by switching tabs.

Smart Placement: The upsell block can only be added above the “Total” section, making sure customers always see it before checking out.

Overall, it’s a neat free app that makes upselling feel effortless, while also giving you some handy customization options.

Shopify checkout upsell apps with both free plan and paid plans 

1. Selleasy

Highlights

What I liked about Selleasy

One of the simplest Shopify checkout upsell apps I’ve tried is Selleasy. What makes it stand out is how easy it is for customers to interact with upsell offers, and how flexible it is for store owners to set them up.

Here are the features I really liked:

Smooth Checkout Experience: Customers can add or remove upsell items and even select variants right at checkout, without going back to product pages. This keeps the buying flow smooth and helps reduce cart abandonment.

AI-Powered Suggestions: Instead of you setting upsells manually, Shopify’s AI automatically suggests the right products for each shopper.

18 Widgets to Choose From: You get a wide range of 18 different widgets to place upsells almost anywhere in your store - not just at checkout - and the best part is, no coding is required.

Affordable Pricing: The app is free if your store has fewer than 50 orders. If you cross that limit, there’s a paid plan, but it’s still affordable considering all the features you get.

Overall, Selleasy is a solid option if you’re looking for a flexible, beginner-friendly upsell app that grows with your store.

What customers love about this app

2. Qikify Checkout Customizer

Highlights

What I liked about Qiikify

This app lets you customize your Shopify checkout with branded blocks and rules, even on non-Plus plans.

Custom Checkout Blocks: Reorder or hide payment/shipping methods, inject custom banners, upsell messages, or FAQs into checkout all without a code.

Upsell Support: Checkout upsell in Shopify (like product offers and custom fields) are only available with the Premium plan ($99/mo) and require Shopify Plus. However, the free tier still gives you basic checkout customizations.

Checkout Customization: Easily tailor the checkout page by adjusting colors, text, payment methods, and shipping options to match your store’s needs.

A great app to start testing checkout experiences. I’d recommend the free plan if you’re exploring designs, but if you want actual upsell products inside checkout, you’ll need Shopify Plus and their paid tier.‍

What customers love about this app

3. C Builder | Checkout Upsells!

Highlights

What I liked about C Builder

Built for Shopify Plus stores, this app gives you full control over your checkout design and makes upsells easy.

Drag-And-Drop Editor: Easily add banners, upsell widgets, custom collect fields, or forms to any checkout or thank-you page.

No-Code Solution: Even complex checkout elements like product upsells or progress bars require no coding. Other features include customizing the Thank You page, creating order & shipping discounts.

Quick Offer Summary: Each offer comes with its own summary section, so you don’t need to scroll through the whole page or click multiple options to see how it’s set up.

Shopify Plus users will love the visual interface and quick setup. If you want your checkout to look sleek and sell more, this app gets it done beautifully.

What customers love about this app

4. Checkout plus

Highlights

What I like about Checkout plus?

One of the apps I tried for checkout upsells is Checkout Plus, and I found it to be really simple and easy to set up. What I like about this app is that it’s not limited to just upsells - it gives you a handful of useful customization options for your checkout page.

Here are the features that stood out to me:

Easy Setup: The app is straightforward to install and configure, so you don’t spend much time getting started.

Multiple Uses: You can use it to display free gifts, trust badges, upsells, or even simple messages on the checkout page.

Payment & Shipping Rules: It allows you to set up rules for customizing payment methods and shipping methods.

Flexible Upsells: Upsells can be created quickly, but you also have advanced options like setting different conditions for when they should show.

Simple Analytics: The analytics are easy to understand, showing you the number of upsells added to cart, upsells sold, and the total revenue generated.

If you’re looking for an app that lets you run quick checkout upsells while also giving you extra checkout customizations, this one is a keeper.

What customers love about this app

What to Consider When Choosing a Shopify Checkout Upsell App

• Checkout Integration – Ensure the app supports Shopify’s one-page checkout and allows upsells to be placed directly inside checkout, not just pre- or post-purchase.
  
• Customization Options – Choose an app that lets you control offer placement, visibility, and conditions based on cart value, products, customer tags, or shipping zones.
  
• Ease of Use – The app should be easy to set up without coding and work easily with Shopify’s checkout editor.
  
• Performance Impact – The app should deliver upsells without slowing down checkout or disrupting the buying flow.
  
• Pricing & Free Plans – Compare pricing models (flat fee vs. revenue share) and look for free plans or trials.
  
• Customer Support & Reviews – Strong support and positive reviews from other merchants are important indicators of reliability.
  
• Scalability – Make sure the app can grow with your store, supporting multi-currency, international sales, or Shopify Plus features.

Frequently Asked Questions

1. How to upsell at checkout in Shopify?

If you’re on Shopify Plus, you can add checkout upsells in Shopify using extensions or apps like Selleasy, Qikify, or Checkout plus.

2. What is the best checkout upsell app for Shopify?

Qikify,  Selleasy, C Builder and all the other above-mentioned apps have been tried and tested individually in my dev store. Be mindful of how to choose the best app by analyzing your store’s needs.  

3. How to upsell in Shopify checkout without an app?

Upselling has certain limits when you want to do it in your checkout page without an app. Usually it is done by playing around with the shipping charges and methods. 

However, using an app gives you more flexibility to add any upsell products of your choice with so many other benefits that come with the app.

Final Thoughts

Shopify checkout upsells are one of the smartest ways to grow your store’s average order value without big ad spends. Whether you’re just starting with free apps like Cart buddy or want advanced apps like Selleasy or Qikify, there’s a solution for every budget. The key is to pick a checkout upsell Shopify app that fits your store size, budget, and future growth.