Is your Shopify store making the most of product add-ons? Upselling add-ons is one of the most effective strategies to boost average order value (AOV) and increase overall sales. There are many ways to do this, and on Shopify, the two most common formats are widgets (inline offers on product, cart, or checkout pages) and popups (dynamic triggers based on cart value, quantity, or products).

Each app approaches product add-on upselling differently. Some focus on customizable FBT widgets, others on smart cart-triggered popups, while a few combine everything into an all-in-one toolkit. In this guide, we’ll give you an overview of the five best Shopify product add-ons apps, highlight what makes each one unique, and help you pick the right solution to grow your store.

1. Two main ways to upsell product add-ons on Shopify

When it comes to upselling product add-ons with Shopify apps, there are two primary approaches:

• Widget-based offers: These appear inline on product pages, collection pages, cart, or even at checkout. They usually take the form of “Frequently Bought Together” blocks or bundle selectors, letting shoppers add complementary products in one click.

• Popup-based offers: These are triggered dynamically when certain conditions are met; for example, when the cart reaches a set value, a specific quantity, or includes particular products/categories. Pop-ups feel more contextual and can drive quick impulse add-ons.

Most top Shopify add-ons apps specialize in one of these approaches or combine both. Understanding the difference helps you decide which style fits best with your customer journey before choosing the right app.

If you prefer not using a third-party app to create a product add-ons widget, we will discuss 2 ways you can use to add product add-ons to the main product without using a Shopify app: How to Add Product Add-Ons to Shopify Products? (With & Without app)

2. The best 5 leading Shopify product add-ons apps compared at a glance

To create this shortlist, we ranked the apps based on four key criteria:

• Functionality breadth – how many upsell/cross-sell scenarios they cover.
• Ease of use – whether merchants can launch campaigns quickly without coding.
• Scalability – ability to handle higher order volumes and integrate into complex sales funnels.
• Merchant feedback – average ratings and number of reviews on the Shopify App Store.

Below is a quick comparison table of the five best Shopify product add-ons apps in 2025, highlighting their best use cases, strengths, drawbacks, and user ratings. This lets you see at a glance which app might best fit your store before diving into the detailed breakdowns in the next section.

3. In-depth overview of 5 Shopify add-on apps for growth

#1 BOGOS: Free Gift & Bundle Upsell

👉 Ratings & reviews: 4.9★ (2,420+)

BOGOS is a Shopify app that lets you create BOGO deals, bundle offers, and free gift campaigns all in one place. With BOGOS, product add-ons can be delivered in two key ways:

• Add-on widgets: You can display “Frequently Bought Together” style blocks across multiple touchpoints (product pages, collection pages, cart, even checkout), so shoppers can easily add related products in one click.
• Add-on popups: Triggered by cart value, quantity, or product/category rules, these popups let you show personalized upsells (e.g., free gift eligibility, bundle suggestions) without interrupting the shopping flow.

What sets BOGOS apart is how it unifies add-ons with broader promotions like BOGO deals, free gifts, and bundles. Instead of managing separate apps for different tactics, you layer multiple promotions inside one engine, ensuring they work seamlessly together. 

This not only simplifies workflows but also helps you capture add-on opportunities at every stage of the customer journey, from browsing to checkout to post-purchase.

Best fit for: Merchants who want a comprehensive, all-in-one app to run diverse and layered promotional campaigns without juggling multiple tools.

Pricing ballpark: The app offers a free plan for up to 30 orders. Paid plans start at $29.99/month, scaling with the number of orders.

#2 ReConvert Upsell & Cross Sell

👉 Ratings & reviews: 4.8★ (2,620+)

Moving away from pre-purchase promotions like bundles, ReConvert specializes in a different part of the customer journey. It focuses almost entirely on optimizing the post-purchase experience by turning the default thank-you page into a new sales and engagement opportunity. With its user-friendly drag-and-drop editor, you can add everything from one-click upsells to surveys, making the most of your customer’s attention right after they buy.

Key features:

• Transforms the standard thank you page with a drag-and-drop editor.
• Presents one-click post-purchase upsell and cross-sell funnels to increase AOV.
• Collects valuable customer insights with integrated surveys and a birthday collector.
• Tracks order status with a visual timeline to reduce “where is my order?” questions.
• Embeds videos and product recommendations to re-engage shoppers immediately.

While powerful, some long-time users have expressed significant frustration with major updates that occasionally required them to completely rebuild their thank you pages. Technical stability has also been a concern for some, who report instances of the post-purchase page failing to load or conflicting with tracking pixels. 

Furthermore, its pricing model, which can be based on your store’s total order volume rather than just the revenue ReConvert generates, has been a point of confusion for some merchants.

Best fit for: Store owners who want to maximize revenue from customers immediately after they’ve completed a purchase.

Pricing ballpark: Free for development stores; paid plans start from $4.99/month and scale higher with usage.

#3 Fast Bundle | Product Bundles

👉 Ratings & reviews: 5.0★ (1,570+)

Unlike Selleasy, which concentrates on adding individual items, Fast Bundle is a specialist Shopify product add-ons app dedicated entirely to creating product bundles. It gives merchants a ton of flexibility to design compelling bundle offers, from standard product combos to letting customers build their own boxes. This singular focus makes it a powerful choice for stores where bundling is a core part of the sales strategy.

Key features:

• Supports multiple bundle types like classic combos and mix-and-match options.
• Allows customers to create their own bundles for a personalized experience.
• Enables volume discounts and tiered pricing to encourage bulk purchases.
• Applies bundle discounts by percentage, fixed amount, or by offering free shipping.
• Uses conditional logic to show bundle offers based on customer tags or cart value.

However, its specialization can present a learning curve for some users. The interface for setting up more complex promotions, like “Buy X, Get Y” style offers, can be unintuitive at first. Additionally, a few merchants have reported minor display issues with specific store themes that required reaching out to customer support, and its analytics are fairly basic for those wanting deep performance data.

Best fit for: Businesses whose sales strategy relies heavily on offering diverse and highly customizable product bundles.

Pricing ballpark: Free for development stores; paid plans range from $19 to $139/month.

#4 Bundler – Product Bundles

👉 Ratings & reviews: 4.9★ (1,350+)

Similar to Fast Bundle, Bundler is another powerhouse in the product bundling space, but it brings unique advantages, especially for merchants with a physical retail presence. It’s one of the most popular bundling apps and is praised for its reliability and rich feature set that helps increase average order value. Its standout feature is the smooth integration with Shopify POS, allowing the same bundle deals to be offered both online and in-store.

Key features:

• Creates classic, mix-and-match, and volume discount bundles.
• Integrates directly with Shopify POS for offering bundles during in-person sales.
• Allows bundle discounts to be combined with certain automatic store discounts.
• Supports creating bundles with subscription products.
• Let’s you feature bundles on dedicated landing pages for focused promotions.

Despite its power, a commonly noted issue involves discount management. The app might not automatically prevent customers from applying another discount code to a bundled offer, which could hurt your margins if not monitored. 

Some users also feel the styling options for the bundle widgets are a bit dated and require custom code for a more modern look. Finally, setting up complex recurring bundles can sometimes be more cumbersome compared to a dedicated subscription app.

Best fit for: Merchants who need a powerful and flexible bundling Shopify product add-ons app that works for both online and in-person sales.

Pricing ballpark: Free plan available; paid plans range from $9.99 to $19.99/month.

#5 Sellelleasy: Upsell & Cross Sell

👉 Ratings & reviews: 4.9★ (1,910+)

While BOGOS offers a broad suite of promotional tools, Selleasy takes a more focused approach, concentrating specifically on upselling and cross-selling individual products. It is widely recognized for its simplicity and effectiveness in adding relevant product recommendations throughout the shopping journey, from the product page to post-purchase. It’s a great starting point for merchants who want to implement this specific strategy without feeling overwhelmed.

Key features:

• Displays Amazon-style “Frequently Bought Together” recommendations on product pages.
• Adds unobtrusive upsell and cross-sell offers before and after a customer adds to the cart.
• Includes a sticky cart drawer that keeps recommendations visible.
• Features one-click post-purchase upsell offers to boost AOV after the sale.
• Allows you to create thank-you page upsells to re-engage customers.

While it excels at simplicity, this focus means it lacks some advanced campaign features you might find in all-in-one tools. For instance, the free plan’s widgets are effective but offer limited design customization, which might not align perfectly with highly branded stores. You also won’t find deep bundling or BOGO capabilities, as the app is built specifically for upselling and cross-selling individual items.

Best fit for: Store owners looking for a straightforward, easy-to-use tool to implement essential upsell and cross-sell features quickly.

Pricing ballpark: The app offers a free plan for small stores. Paid plans start at $8.99/month, scaling up to $49/month with advanced features.

4. Which Shopify product add-ons app fits your store best?

Each of the five apps shines for a different type of merchant:

• BOGOS → Best for merchants who want an all-in-one promotional engine, combining bundles, BOGO, free gifts, and add-ons in a single tool.
• ReConvert → Perfect for stores that want to maximize post-purchase revenue with powerful thank-you page upsells and surveys.
• Fast Bundle → Suited to businesses where bundling is the core strategy, needing flexible mix-and-match and build-your-own bundle options.
• Bundler → Ideal for merchants selling both online and in-person (POS) who want to run consistent bundle campaigns across channels.
• Selleasy → Great entry point for small-to-medium stores that need simple, effective FBT-style upsells at an affordable price.

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