The Best Free Product Bundle App for Shopify Stores in 2025

In eCommerce, getting a shopper to click “Add to Cart” is only part of the challenge. The bigger opportunity lies in increasing average order value (AOV)—and that’s where product bundling apps come in. These apps empower you to combine complementary products, offer flexible discounts, and streamline the path to purchase. The result? Happier customers, bigger baskets, and better profitability.

Whether you’re selling curated kits, volume deals, or build-your-own sets, bundling apps help turn browsers into multi-product buyers. In this guide, we’ll explore what bundling apps do, the types of bundles you can create, and the best Shopify bundle apps to elevate your sales strategy.

What Is a Product Bundling App?

A product bundling app allows merchants to combine multiple products into a single offering—often at a discounted rate—without needing to manually code product pages or handle complex inventory syncing. These apps integrate directly with your Shopify store and offer ready-made templates, discount configurations, and bundle tracking.

From simple “Buy One Get One” offers to complex mix-and-match kits, bundle apps make it easy to:

• Increase cart size
• Simplify buying decisions
• Offer curated customer experiences

Some also include built-in analytics dashboards, inventory management tools, and conversion optimization features.

Types of Product Bundles

Here are the most popular bundle formats you can create using a Shopify bundle app:

1. Classic Bundles – Pair complementary items at a bundled discount. Example: camera + lens + memory card.
2. Mix and Match – Customers choose products from a list to build their own bundles.
3. Buy One, Get One (BOGO) – Customers get a second item free or discounted.
4. Volume Discounts – The more a customer buys, the more they save.
5. Tiered Pricing – Discounts are unlocked once a specific cart value or quantity is reached.
6. Quantity Breaks – Discounts triggered by the number of units purchased for a single item.

Benefits of Using Shopify Bundle Apps

1. More Sales Per Customer

Bundling encourages customers to buy more, often at a small discount that still increases AOV. Instead of just buying one item, shoppers leave with a set of curated products. A great example is MagMod, a brand that bundled flash diffusers with accessories to great success, helping them grow 200% year-over-year.

2. Improved Shopping Experience

Bundles simplify decision-making by showing customers what works well together. This removes the friction of figuring out what to pair, while also introducing new product options they might not have considered.

3. Flexible Selling Strategies

Want to clear out seasonal stock? Promote upsells? Offer bundle discounts only on mobile? Bundle apps let you build campaigns around your sales strategy. Whether you’re using fixed sets, user-built kits, or automatic add-ons, bundling opens a wide range of possibilities.

The Best Shopify Bundle App

What is AERO Upsell & Bundle?

AERO Upsell & Bundle is a Shopify app built to help merchants increase sales through smart upselling and bundling techniques. Designed with simplicity in mind, AERO allows store owners to set up “Frequently Bought Together” offers, add-on products, and in-cart upsells—all while maintaining seamless integration with Shopify’s native discount system.

The app uses a drag-and-drop editor, so even non-technical users can quickly build and launch upsell campaigns. Whether you’re recommending complementary products or creating limited-time bundle offers, AERO makes the process intuitive and efficient.

Key Features of AERO Upsell & Bundle

Let’s break down the standout features that make AERO a top-tier upsell and bundle app for Shopify:

1. Frequently Bought Together Offers

One of AERO’s most popular features is its “Frequently Bought Together” widget. This tool appears on product pages and showcases related products that customers often buy in combination with the current item. These curated suggestions not only enhance the customer experience but also gently nudge buyers toward increasing their cart size.

You can manually curate product pairings or let AERO suggest combinations based on sales behavior and logic. It’s perfect for recommending a camera bag with a DSLR or a phone case with a mobile device.

2. Product Page Add-Ons

AERO allows you to create product add-ons that appear as optional extras on product pages. For example, if you’re selling electronics, you can offer add-ons like batteries, chargers, or extended warranties. These add-ons are integrated seamlessly into the Shopify product layout, making them feel like a natural part of the shopping experience.

This feature is ideal for Shopify merchants who want to provide value-added services or products without cluttering the main catalog.

3. Cart Page Upsells

Sometimes the best opportunity to upsell is right before checkout. AERO’s cart add-ons let you display complementary offers in the cart before the customer clicks the final “checkout” button. This last-moment upsell opportunity often captures impulse purchases—think gift wrapping, premium shipping, or accessories.

These cart-level promotions are fully customizable, allowing you to control when and where the upsell appears and which products or collections trigger the offer.

4. Smart Discount Engine

AERO supports a versatile discount engine that works within Shopify’s native discounting system. You can create percentage-based discounts, fixed-price bundles, or offer perks like free shipping.

This ensures that your discounts are applied seamlessly at checkout without the need for custom code or manual adjustments. The flexibility allows you to experiment with different promotional strategies and find what converts best.

5. Custom Content and Styling

Branding consistency is key to trust and conversions. AERO allows full control over the content and appearance of your upsell offers. You can:

• Edit titles and descriptions
• Customize fonts, colors, and layout
• Add urgency-driven messages like “Only 2 left!” or “Hot Bundle!”
  

The result is a clean, professional upsell widget that matches your Shopify store’s aesthetic perfectly.

Why AERO is One of the Best Free Bundle Apps for Shopify

Many Shopify apps promise great features—but often at a high price. AERO stands out by offering substantial value in its free plan, making it a great choice for new merchants who want to experiment with upselling without making a financial commitment upfront.

Beginner-Friendly Setup

The app features a drag-and-drop campaign builder that allows even first-time users to launch upsell offers in minutes. You don’t need to know how to code, and you can preview your campaign live before publishing it.

This user-centric design makes AERO especially attractive to merchants who are still learning the ropes of Shopify and digital selling.

Scales With Your Store

AERO’s tiered pricing model allows you to start small and scale up. The free plan includes all core features with one active campaign at a time, which is more than enough for many small or niche stores. As your business grows, upgrading to the premium plan unlocks unlimited campaigns and advanced features.

This makes AERO a future-proof choice—you won’t have to switch apps when you’re ready to expand.

Pros and Cons

Let’s quickly summarize the advantages and limitations of AERO Upsell & Bundle.

Pros

• Free plan includes all essentials
• Simple drag-and-drop campaign builder
• Supports three types of upsells (product, cart, bundle)
• Native Shopify discount integration
• Fully customizable styling and content
• Works with all Shopify themes
• Lightweight and fast-loading

Cons

• Free plan supports only one active campaign
• Advanced targeting options only in paid plan
• Lacks AI-based personalization (for now)

How to Choose the Right Shopify Bundle App

When choosing from the best Shopify bundle apps, consider these factors:

• Ease of use: Drag-and-drop interfaces save time.
• Free plan availability: Start with the best free Shopify bundle app to validate impact.
• Discount flexibility: You want apps that let you mix % off, free gifts, and tiered pricing.
• Theme compatibility: Ensure seamless integration with your store’s design.
• Support & updates: Check how often the app is updated and whether support is responsive.

For example, AERO Upsell & Bundle checks all these boxes, making it one of the best free apps on Shopify for stores focused on revenue growth.

Final Thoughts

Bundling isn’t just about increasing AOV—it’s about offering value. The best Shopify bundle apps help you guide your customers to better purchasing decisions by combining value, simplicity, and incentives.

If you’re just getting started, apps like AERO Upsell & Bundle give you room to test without cost. As your business grows, premium features across tools like PickyStory, Fast Bundle, and Revy offer deeper integration and customization.

No matter your niche, bundling can help you:

• Move inventory faster
• Create high-converting sales funnels
• Offer better shopping experiences

Start with a strategy, test bundles using a free plan, and keep a close eye on results. With the right app, your next best-seller might not be a product—but a well-crafted bundle.