Free Shopify Checkout Upsell Apps — And Where Each One Starts Charging You (2026)

Increasing your average order value (AOV) is a common goal for e-commerce stores, and one way to do that is by using a Shopify checkout upsell.

The idea is simple: when a customer is already ready to buy, you can suggest a relevant product or add-on before they complete their purchase. Since they’re already in buying mode, it can be a natural way to increase the value of the order. Shopify also highlights upselling as a strategy that can help increase AOV.

But there’s one thing you’ll notice when looking at “free” Shopify checkout upsell apps: free usually comes with a limit.

I installed and checked the pricing of every app on this list directly on its Shopify App Store listing. In every case, the free plan comes with some kind of restriction, whether that’s a monthly order limit, a revenue limit, store eligibility, or a key feature that isn’t available on the free plan.

I’ve also left out two apps that used to appear in free-app roundups but no longer offer a free plan for live stores. That way, this list reflects what you can actually use today rather than outdated pricing information.

How “free” actually works on the Shopify App Store

When a Shopify app says “Free plan available,” it doesn’t always mean you get the full app for free. In most cases, there’s some kind of limit or catch.

Here are the most common ways “free” works:

1. Free forever, with no usage limit - This is the simplest option, but it’s also pretty rare.
2. Free forever, but with a catch - You can keep using the app for free, but things like the app’s branding may remain visible unless you upgrade.
3. Free up to a certain limit - The app may be free until you reach a specific number of orders or a certain amount of revenue. Once you cross that limit, you’ll need to move to a paid plan.
4. Free plan, but without the feature you actually need - The app has a free tier, but the main feature you’re looking for may only be available on a paid plan.
5. Free for development or test stores only - Some apps are free when you’re testing them on a development store, but you’ll need a paid plan once you use them on a live store.

For each app below, I’ve explained what “free” means based on its current pricing, rather than relying on the Shopify App Store’s generic “Free plan available” label.

If you’re looking for paid, full-featured checkout upsell tools instead, check out our roundup of the best Shopify checkout upsell apps.

1. SMART Checkout Rules & Upsells 

This is the only app on the list that doesn’t put a limit on its free plan. Its Shopify App Store listing simply shows “Free” and doesn’t have any paid pricing tiers. Unlike the other apps in this list, there’s no pricing table with higher plans sitting above the free option.

What you get

• One-click post-purchase upsells: Add an offer immediately after checkout to encourage customers to buy an additional product. The app lists this as “1-click post-purchase upsells & downsells.”
• Checkout validation and blocking: You can hide, block, sort, or rename payment and shipping methods based on things like country, customer tags, cart value, products, or discounts. This can be useful if you want to restrict certain payment methods or block specific orders.
  
• Checkout blocks: Add things like banners and discount codes directly to the checkout to help reduce abandoned carts.

One thing to keep in mind: the checkout-related features are worth testing on your own store. 

If you’re specifically looking for a genuinely free option with no expiry date, this is currently the closest match on this list. Just keep in mind that app pricing can change, so it’s worth checking the Shopify App Store listing again before making it the foundation of your upsell strategy.

2. Zoorix

Zoorix can help increase checkout AOV through cross-sells, bundles, and volume discounts. While it isn’t a checkout-only app, its Shopify App Store listing specifically mentions Shopify Checkout compatibility, along with multi-currency and multi-language support.

The good part is that the Forever Free plan includes all of its core features. The main reason to upgrade is to remove Zoorix branding.

What you get for free

• Core features included: Cross-sells, bundles, volume discounts, mix-and-match offers, the cart drawer, and product recommendations are all available on the free plan. It’s not just a limited trial.
• AI-powered cross-sells: Zoorix can automatically match products and show recommendations on product pages and in the cart drawer.
• Shopify Checkout compatibility: The app’s listing specifically mentions compatibility with Shopify Checkout, along with features such as multi-currency and multi-language support.
• Revenue-based paid plans: If you upgrade, pricing depends on the revenue generated through Zoorix rather than being a simple flat monthly fee.

So, if you don’t mind keeping the Zoorix branding, the free plan can be a long-term option with access to the core features.

3. Selleasy

Selleasy’s free plan for stores with up to 50 orders per month is not a stripped-down version of the app. It includes all 18 upsell and cross-sell strategies, along with 50 AI-powered product recommendations. You only start paying once you go beyond 50 orders in a month.

Selleasy’s Shopify listing mentions checkout upsells and post-purchase upsells as part of its features. 

What you get for free

• Add or change variants without leaving the current page: Customers can add or swap product variants without being sent back to the product page.
• AI-powered product recommendations: Recommendations are generated automatically rather than requiring you to configure every product match manually. The free plan includes 50 AI recommendations.
• 18 upsell and cross-sell strategies: The free tier includes the full set of strategies across product pages, cart, checkout, post-purchase, and thank-you pages.
• Checkout placement: Selleasy lists checkout upsells as a feature, but its listing doesn’t clarify whether this applies to non-Plus stores. 

Overall, Selleasy is one of the more feature-rich free tiers on this list, especially if you’re under the 50-order monthly limit.

4. AOV.ai Post Purchase Upsell

What makes AOV.ai different is that its free-plan limit is based on upsell revenue, not the number of orders. This can be useful for smaller stores with a higher average order value, as you may stay under the $200 limit even with a steady flow of orders.

The free plan also includes unlimited offers, analytics, order tracking, and ready-to-use templates, so it isn’t just a basic trial version.

What you get for free

• Post-purchase, thank-you page, and order-status upsells: You can show one-click upsells or downsells after checkout, on the thank-you page, and on the order-status page. Customers don’t have to enter their payment details again.
• Analytics included: Order tracking and detailed analytics are available on the free plan, rather than being locked behind a paid tier.
• $200 revenue limit resets monthly: You get a fresh $200 allowance every 30 days. If you upgrade, the revenue limit is removed instead of moving you to another capped tier.
• Paid plans depend on your Shopify plan: AOV.ai doesn’t use a simple fixed pricing ladder. The paid plan depends on the Shopify plan your store is using and adds features such as AI product recommendations, automatic translation, and A/B testing.

If you’re looking for a free app where the limit is based on revenue generated rather than order volume, AOV.ai is worth considering.

5. Cart Buddy

The pricing shows a 50-order monthly limit on the free plan. The free tier is called “Basic campaign setup” and includes checkout and product-page (PDP) displays.

Cart Buddy is a relatively small app, with only a small install base. It’s worth treating it as an option to test rather than an established solution.

What you get for free

• AI-powered product recommendations: Cart Buddy uses AI to recommend relevant products automatically instead of requiring you to configure every product pairing manually.
• Checkout integration: The app says it can integrate with your store’s checkout process, and Checkout is listed among the extensions it supports.
• Personalized offers: You can adjust offers based on customer behavior without needing to write custom code.

Cart Buddy could be worth testing if your store has a low order volume and you want AI-powered recommendations. However, if checkout-step placement is important to your strategy, confirm that it works on your specific Shopify plan before relying on it.

6.  BOGOX

BOGOX is currently available for free with no visible usage limit, which is fairly uncommon. However, it’s still a relatively new app, launched in May 2024. 

What you get for free

• A wide range of promotional tools: BOGO, Buy X Get Y, free gifts, bundles, mix-and-match offers, and upsells are all available in one app.
• Upsells across multiple stages: The app lists product pages, cart, and checkout as supported placements.
• Automatic discounts: You can set up pre-purchase upsell popups with discounts that are applied automatically, so customers don’t have to enter a code themselves.
• Built-in analytics: The app includes analytics to help you track sales and understand how your offers are performing.

BOGOX is worth testing if you want a free app with a broader set of promotional features.

7. Qikify Checkout Customizer

Qikify Checkout Customizer is mainly focused on customizing and managing the checkout experience. Its free plan includes several checkout tools, such as payment and delivery method customization and checkout validation.

What you get for free

• Payment method customization: Reorder, hide, or rename payment methods.
• Custom delivery methods: Create and customize delivery options.
• Checkout validation: Add rules to control checkout based on your requirements.
• Live chat support: Included in the free plan.
• Custom branding styles: Available on the free plan, although the listing marks this feature as Shopify Plus-only.

The Premium plan adds product offers and add-ons, custom fields, additional widgets, badges, testimonials, post-purchase extensions, and B2B extensions. The developer lists this plan specifically for Shopify Plus stores.

So, Qikify can be useful if your goal is to customize the checkout experience for free. However, if you specifically need checkout upsells, you’ll need the Premium plan.

8. Kaching Post Purchase Upsell

While Kaching isn’t free for live stores, its lowest paid plan is relatively inexpensive for a new store. You can also set up and test the entire funnel on a development store for free before deciding whether to use it on a live store.

What you get

• One-click post-purchase upsells: Customers can accept an offer without entering their payment details again.
• Targeting rules: You can customize when offers appear using conditions such as minimum order value, UTM tags, and other triggers.
• Customizable offers: Upsell pages can be styled to match your store without needing to code.
• Support on the entry-level plan: Recent reviews mention fast, hands-on support from the Kaching team, including help from specific team members.

If you’re still testing your store, you can build and test the funnel for free on a development store. Once you’re ready to go live, the $4.99/month plan is the starting point.

The Bottom Line

Not all “free” plans are free in the same way. Before installing an app based on the “Free plan available” badge, check what the free plan actually limits; it could be the number of orders, revenue generated, certain features, or even the type of store you can use it on.

Also check whether billing starts automatically once you cross the limit and, more importantly, whether the free plan actually includes the feature you need. An app can have a free plan but still put the feature you’re looking for behind a paid tier.

It’s also worth looking at how established the app is. A newer app with only a few reviews may change its pricing or plans as it grows.

Finally, don’t stop at the free tier. Check what you’ll actually pay once your store outgrows it. Some apps have a small step up from free, while others can move you into a much higher-priced plan.