7 Best Nitro Upsell & Cross-Sell Alternatives for Shopify [2026]

Looking for a Nitro Alternative?

Nitro: Upsell & Cross-Sell, which some stores still know as Nitro: AI Store Builder & CRO, is a popular Shopify app for adding cart upsells, bundles and volume discounts to an existing theme. Its offers, though, stop at the cart page, with nothing after payment, and reviews or a cart drawer still need other apps.

So, we compared seven alternatives on the upsell and bundle offers they can create, where those offers can appear between the product page and the thank-you page, and how many other apps each one can replace. Vitals is our app, so we've noted its gaps too.

What Is Nitro Shopify App?

Nitro: Upsell & Cross-Sell is a Shopify app for raising order value with upsell and cross-sell offers that fit inside the store's current theme. Its cart upsells recommend products on the cart page before checkout, and its bundles and discount offers reward shoppers who add more.

Here's what you can do with Nitro:

• Cart upsells: Show product recommendations on the cart page before checkout, with your own rules for each offer.
• Bundles and cross-sells: Create product bundles and cross-sell recommendations that encourage larger orders.
• Discount offers: Set Buy X Get Y promotions and quantity-based volume discounts.
• Trust widgets: Add sales notifications, trust badges, an inactive tab message and a cart count on the browser tab icon.
• Extra storefront features: Add shoppable video, age verification, content protection and a snowfall effect, and track offers, orders and revenue in a built-in dashboard.

Where Nitro stands out is how much it fits into one small app. Bundles, cart upsells and discount offers sit next to shoppable video and age verification, and each feature can be switched on by itself. That suits smaller stores that want a few offers and widgets without adding more apps.

Customer reviews most often praise its support team, which reviewers credit with writing custom CSS and moving the app to a new theme for them.

How Much Does Nitro App Cost?

Nitro's website doesn't list prices, so these come from the Shopify App Store listing on October 14, 2026, with a 7-day free trial. The listing adds that the bill can grow as the store earns more, through usage-based charges it doesn't spell out.

Why Shopify Merchants Look for Nitro Alternatives

Nitro holds a 5.0 rating from 257 reviews but doesn't carry the Built for Shopify badge. Still, merchants who switch away from it mention these reasons:

• Its listing describes upsells on the cart page before checkout, with no post-purchase or thank-you page offers
• Cart upsells, volume discounts, Buy X Get Y and trust badges all sit on the paid plan, and the listing says the price rises as the store earns more
• The developer's website has no help center, docs or changelog for this app, so setup questions go through live chat
• The admin is in English only
• Pre-orders and lookbooks are separate apps from the same developer, and reviews or a cart drawer need other apps entirely

Switching makes the most sense for stores that want their upsells and the rest of their storefront apps on one subscription instead of several.

Read: Best Shopify Upsell Apps in 2026

How We Compared the Nitro Alternatives

We read each app's live Shopify App Store listing, its help docs and its changelog on October 14, 2026, and took every rating and review count from the listing that day.

We compared the apps on:

• App type: standalone or all-in-one
• Core upsell features: bundles, quantity breaks, Buy X Get Y, cart offers and cross-sell recommendations
• Store areas covered: product page, cart, checkout and post-purchase
• How many separate apps each one replaces
• Scripts added to the storefront and theme integration
• AI features and MCP support
• Setup, from the listing, the docs and what merchants report in reviews

Short Answer

Vitals - All in One App is the best Nitro alternative for most stores.

• It offers product bundles, cart offers and one-click post-purchase upsells, while Nitro lists no offers after payment
• It includes 40+ apps, such as reviews, bundles and discounts, in one subscription of $29.99/month
• It replaces multiple single-purpose apps that you would otherwise install and pay for every month

What Are the Top Nitro Alternatives for Shopify in 2026

Below is a quick view of who each app fits, then a closer look at its offers and where they stop.

1. Vitals - All in One App

Best for: Stores that want Product Bundles, Post-Purchase Offers, Product Reviews and Related Products plus 40+ apps in one subscription

Rating: 4.9 (2,994 reviews) | App type: All-in-one | Free trial: 7 days | Built for Shopify: Yes

Vitals is our app. It brings 40+ apps into a single subscription of $29.99/month, and product bundles lead its upsell side, next to reviews and discounts.

Vitals Product Bundles App puts two to five products into one offer at a lower price than buying each. Customers can replace an item with Pick Another and add every product to the cart in one click.

That bundle can also show on the cart page, in pop-ups on add to cart and checkout, and on the thank-you page, with a separate switch for each. After payment, another Vitals app, Post-Purchase Offers, can show a one-click offer of up to five products. Customers can accept it without typing their card again, and Nitro's listing names no offers at this stage.

Key features:

• Bundles of two to five products in up to four groups, with Smart Match picking related items
• One-click post-purchase offers with up to five products
• Bundle placements on the cart page, in add-to-cart and checkout pop-ups and on the thank-you page
• Quantity break tiers with a free gift or a discounted add-on inside any tier
• Buy X Get Y offers with several reward products and the cheapest item discounted automatically
• Offers limited to chosen Shopify Markets and hidden from B2B or tagged customers
• A cart drawer that slides out over the page, so shoppers see their cart without leaving it
• An inactive tab message and a cart count on the browser tab icon, next to sales notifications and trust badges

Pros:

• Upsells before and after payment without a second app
• The AI Offer Generator turns a one-sentence description into an offer
• Upsells and 40+ other apps on one plan (e.g., Little Dresser replaced 20 single-purpose apps with one Vitals plan)
• Vitals MCP lets Claude or ChatGPT draft and edit offers, which stay unpublished until you press Save

Cons:

• Customers can't choose a variant for each item inside a bundle
• Works on Shopify only

Pricing:

Prices from vitals.app/pricing on October 14, 2026, with a 7-day free trial.

Read: Best Bundle Apps for Shopify in 2026

2. Kaching Bundles App & Upsells

Best for: Stores that compare deal versions side by side before settling on one

Rating: 5.0 (6,298 reviews) | App type: Standalone | Free trial: 7 days | Built for Shopify: Yes

Kaching Bundles App & Upsells, formerly Kaching Bundle Quantity Breaks, builds its offers into one block above the add-to-cart button. The same editor can A/B test two deal versions and show which one brings in more revenue. It suits stores that treat pack pricing as an ongoing experiment.

Merchants report quick setup, with the support team often configuring the first deal over live chat.

Key features:

• Quantity breaks set as a percentage, an amount off or a fixed total
• Buy X Get Y offers with the free items marked in the cart
• Free gifts and one-click add-ons inside a tier
• "Complete the bundle" offers that pair different products
• AI recommendations for upsell products
• A/B testing of deal versions with revenue reports
• Variant swatches inside each tier

Pros:

• Built for Shopify, which Nitro isn't
• Every plan has every feature
• Works with Shopify POS and Hydrogen storefronts

Cons:

• Offers sit on the product page, while its cart drawer, post-purchase offers and pop-ups are separate Kaching apps
• The price climbs with the extra revenue the app tracks
• No trust badges or sales notifications
• Some 2026 reviews describe slower live chat replies than before

Pricing:

Prices from kachingappz.com on October 14, 2026, with a 7-day free trial.

3. Bundler » Product Bundles App

Best for: Stores that send ad and email traffic to a dedicated page for each bundle

Rating: 4.9 (2,732 reviews) | App type: Standalone | Free trial: 7 days | Built for Shopify: Yes

Bundler » Product Bundles App has sold bundles on Shopify since 2019. Besides the product page widget, it can generate a page for every bundle and one page that lists them all. It suits stores that promote bundles from campaigns and need a link to send people to.

Merchants report setup is straightforward, and some finish within minutes.

Key features:

• Classic bundles and variant-level bundles
• Mix-and-match bundles, including tiered and sectioned versions (Premium plan)
• Quantity breaks by quantity, cart value or range
• Buy X Get Y deals
• A landing page for each bundle and a bundles listing page (Premium plan)
• Shortcodes that place a bundle anywhere in the store (Premium plan)
• Customer-tag targeting and scheduled start and end dates
• Revenue, order value and best-bundle analytics (Executive plan)

Pros:

• Built for Shopify, with Shopify POS support on every plan
• Neither plan caps orders or the revenue the app brings in
• Uses the products a store already has, so no duplicate bundle products appear
• Admin available in 17 languages, where Nitro's listing names English only

Cons:

• Offers stay on the product page and bundle pages, with no cart upsells or post-purchase offers
• Support is by email only
• No AI features listed

Pricing:

Prices from bundler.app on October 14, 2026, with a 7-day free trial. Neither plan caps orders or revenue.

4. Pumper Bundles Quantity Breaks

Best for: Stores whose best seller moves in multipacks, with a different discount style on each tier

Rating: 4.9 (3,563 reviews) | App type: Standalone | Free trial: 7 days | Built for Shopify: Yes

Pumper Bundles Quantity Breaks keeps its tiers, bundles, BOGO deals and free gifts in one widget above the add-to-cart button. Each tier can carry its own discount type, so a two-pack can show a per-unit price while a three-pack shows a percentage. It suits stores where one or two products drive most orders.

Pumper says no code or theme edits are needed, and reviewers call setup quick and simple.

Key features:

• Quantity breaks priced per unit, as a percentage, as a flat amount or as a fixed price, mixed across tiers
• Fixed bundles and mix-and-match bundles
• BOGO and Buy X Get Y offers
• Free gifts inside a tier or at a set threshold
• Tier badges, labels, images and sold-out states
• Market targeting and AI translations

Pros:

• Built for Shopify, with live chat support often credited by name
• Works with slide carts such as Upcart, Monster Cart and Opus Cart
• Admin available in 11 languages

Cons:

• Offers sit on the product page only, with no cart upsells of its own
• No A/B testing listed
• No cross-sell recommendations
• A few low-star reviews describe discounts that kept applying after an offer was switched off

Pricing:

Prices from pumper.run on October 14, 2026, with a 7-day free trial. The revenue limits come from its App Store listing.

5. Zoorix: Bundles & Cross Sell

Best for: Stores that want cross-sells in a slide-out mini-cart rather than only on the cart page

Rating: 4.9 (388 reviews) | App type: Standalone | Free trial: 30 days | Built for Shopify: No

Zoorix: Bundles & Cross Sell, formerly Zoorix Bundle Kit & Cross Sell, is the closest match here to Nitro's cross-sell side. It adds its own mini-cart that opens on each add to cart, where AI and manual rules suggest the next product. It suits stores that want the upsell to appear the moment an item lands in the cart.

Merchants report easy setup with simple steps, and support helps fix layout issues quickly.

Key features:

• Fixed bundles of up to eight items, mix-and-match and Build a Box bundles
• Quantity breaks with a popular-tier badge
• BOGO and frequently bought together offers
• AI cross-sell recommendations with manual product rules
• Mini-cart, sticky cart and cart page cross-sells
• One-click add-ons
• A free shipping goal in the cart

Pros:

• A slide-out mini-cart with cross-sells, where Nitro's upsells sit on the cart page
• Every feature on every plan
• 30-day free trial, the longest here
• Mix-and-match bundles also show on the Shop app

Cons:

• Not Built for Shopify
• No checkout or post-purchase offers listed

Pricing:

Prices from zoorix.com on October 14, 2026, with a 30-day free trial. Every band has every feature.

6. Unlimited Bundles & Discounts

Best for: Stores that keep certain bundles for repeat buyers, big spenders or tagged customers

Rating: 4.8 (727 reviews) | App type: Standalone | Free trial: No | Built for Shopify: Yes

Unlimited Bundles & Discounts comes from Revy Apps and applies its discounts automatically through Shopify Functions. Each offer can target customers by order count, total spend or tags. It suits stores that want loyal customers to see deals first-time visitors don't.

Merchants report setup is easy and needs no code, and Revy says its theme extensions take about a minute to add.

Key features:

• Fixed bundles shown on the product page of every item in them
• Quantity breaks and tiered discounts
• Mix-and-match bundles and build-your-own-bundle pages from products or collections
• Buy X Get Y, free gift and free shipping offers
• Customer targeting by order count, amount spent and tags
• Shopify Markets, multiple currencies and languages

Pros:

• Built for Shopify, with discounts applied automatically at checkout
• Every plan has every feature
• The plan drops a tier on its own when bundle sales fall

Cons:

• No upsell or cross-sell offers, which Revy sells as a separate app
• One low-star review mentions no add-bundle-to-cart link for marketing emails
• No AI features or MCP support listed

Pricing:

Prices from revy.io on October 14, 2026, with no free trial listed. Bundles keep working if sales pass a plan's limit, and the app changes tier automatically.

7. Simple Bundles & Kits

Best for: Stores whose fulfilment partner must see each item SKU inside a kit

Rating: 4.8 (804 reviews) | App type: Standalone | Free trial: No | Built for Shopify: Yes

Simple Bundles & Kits, made by Freshly Commerce, turns each bundle into a product whose stock comes from the items inside it. At checkout the bundle splits into item SKUs, so packing slips, POS and 3PLs see exactly what to pick. It suits stores that sell kits and gift boxes through a warehouse.

Merchants report setup was quick and intuitive, with clear getting-started steps.

Key features:

• Fixed bundles, kits, multipacks and gift boxes
• Mix-and-match and build-your-own-box bundles
• Upsells on the product page
• Infinite Options bundles that go past Shopify's variant limit
• Bundle stock set by the lowest-stocked item, with a live stock check at checkout
• Orders split into item SKUs for 3PL, WMS and packing slips
• Bundle Magic AI, which suggests bundles from order history or a plain-language description

Pros:

• Built for Shopify, with Shopify POS on every paid plan
• Works with Recharge, Seal, Appstle and Loop subscriptions
• Shopify Flow on Grow & Advanced and Hydrogen on Plus
• AI bundle suggestions drawn from the store's own orders

Cons:

• No cart, checkout or thank-you page offers
• The fee rises with the store's Shopify plan, up to $149 a month on Plus

Pricing:

Prices from simplebundles.com on October 14, 2026, with no free trial listed. Plan names follow the store's Shopify plan.

How Many Apps Each Option Replaces

Each app a store adds can load its own code on every page, which affects load time. Here's how many separate apps each option covers, by our count.

How we counted it:

• Vitals - All in One App replaces up to 40+ single-purpose apps, starting with a bundle app, a cart upsell app, a post-purchase offer app, a cart drawer app, a related products app, a trust badge app and a product reviews app
• Kaching Bundles App & Upsells replaces a quantity break app, with Kaching's cart drawer and post-purchase apps added separately when a store needs them
• Bundler » Product Bundles App replaces a bundle app and, for stores that promote bundle pages, a landing page app
• Pumper Bundles Quantity Breaks replaces a quantity break app and, for some stores, a free gift app
• Zoorix: Bundles & Cross Sell replaces a bundle app, a cross-sell app and a basic mini-cart app
• Unlimited Bundles & Discounts replaces a bundle app and a free gift or BOGO app
• Simple Bundles & Kits replaces a bundle app and the stock sync a store would otherwise set up for kits
• Nitro: Upsell & Cross-Sell replaces a cart upsell app, a volume discount app, a sales notification and trust badge app and a shoppable video app

A store using Nitro next to a post-purchase app, a reviews app and a cart drawer app can move all of them to one Vitals subscription that covers 40+ apps.

When Should You Stay on Nitro

Nitro is still the better choice in two cases.

• You use its shoppable video, age verification or content protection along with its offers, and want them all from one small app
• You rely on its support team for custom CSS that makes each widget match your theme

Switch when you want offers after payment and your reviews and cart drawer under the same subscription as your upsells.

How to Migrate From Nitro

Nitro holds your offer rules, the automatic discounts behind them and any custom CSS its support team added for you. Plan the move so no old discount keeps applying after the switch.

1. List every live Nitro offer, including cart upsells, bundles, Buy X Get Y deals and volume tiers, and note the videos placed in its shoppable video widget
2. Install Vitals - All in One App and rebuild each offer in the Vitals Product Bundles, Volume Discounts or BOGO app, or describe it to the AI Offer Generator
3. Turn on a Vitals post-purchase offer, and the Vitals sales notification and trust badge apps if you used Nitro's. Vitals has no shoppable video, so keep a separate video app if you use it
4. Test every offer on a duplicate theme and place a test order for each one
5. Switch off Nitro's app embed, remove the custom CSS its support added, and delete any Nitro discounts left in Shopify's Discounts page
6. Publish the theme and uninstall Nitro

Shopify stores such as Metal Art Cafe swapped a stack of single-purpose apps for one Vitals subscription.

Read: Best All in One Apps for Shopify in 2026

Find the Best Nitro Alternative for Your Store

Vitals - All in One App is the best fit for most stores, but the right pick depends on why you're leaving Nitro.

• Vitals, if you want product bundles, post-purchase upsells, cart offers, discounts and 40+ apps in one single subscription of $29.99/month
• Kaching Bundles App & Upsells, if you'd like test results to tell you which pack deal to keep
• Bundler » Product Bundles App, if your campaigns link straight to a page for each bundle
• Pumper Bundles Quantity Breaks, if most orders come from one product bought in twos and threes
• Zoorix: Bundles & Cross Sell, if a mini-cart that opens on every add to cart is where you want to upsell
• Unlimited Bundles & Discounts, if returning customers should get bundles new visitors don't see
• Simple Bundles & Kits, if a warehouse has to pick each item in your kits

Start a 7-day free trial: Install Vitals - All in One App

Frequently Asked Questions

1. What is the best Nitro alternative for Shopify?

Vitals - All in One App is the best Nitro alternative for most stores. It's the only all-in-one app that includes 40+ apps, such as product bundles, post-purchase upsells, quantity breaks and reviews, in one subscription. It's our app, so check its entry for what it doesn't do.

2. Why do merchants switch from Nitro?

Nitro's offers reach the cart page before checkout but not the pages after payment. Its cart upsells, volume discounts and Buy X Get Y need the paid plan, whose price can grow with store revenue. It isn't Built for Shopify, its admin is in English only, and it has no public docs or changelog.

3. How do Vitals and Nitro compare on upsell features?

Both offer product bundles, cart offers, Buy X Get Y and volume discounts, and both include sales notifications, trust badges, an inactive tab message and a cart count on the browser tab icon. Nitro adds shoppable video and a snowfall effect. Vitals adds post-purchase offers, bundle placements in pop-ups and on the thank-you page, and its reviews and other storefront apps in the same subscription.

4. Can Vitals replace Nitro and other apps at the same time?

Yes. Vitals can replace Nitro along with separate apps for post-purchase offers, product reviews, a cart drawer and related products.

5. How do these Nitro alternatives affect store speed?

Each app a store installs can add its own scripts to the storefront, so speed depends on how many apps are installed as well as which ones. Vitals - All in One App loads its bundles, upsells and other apps from one script. A store that covers the same jobs with several single-purpose apps loads a script for each. We didn't speed-test these apps, so check your own pages before and after a change.

6. Which Nitro alternatives have AI features or MCP support?

Not all of them. Vitals has the AI Offer Generator and Vitals MCP, which lets Claude or ChatGPT draft and edit offers for you to review before they go live. Kaching Bundles App & Upsells lists AI recommendations. Simple Bundles & Kits has Bundle Magic AI, Zoorix: Bundles & Cross Sell has AI cross-sell suggestions and Pumper Bundles Quantity Breaks has AI translations. None of those four list MCP support. Bundler and Unlimited Bundles list no AI features, and Nitro's listing tagline says AI designs your store but names no MCP support.

7. Which Nitro alternatives show offers after checkout?

Not all of them. Vitals - All in One App has one-click post-purchase offers and thank-you page bundles. Kaching sells post-purchase offers as a separate app, and Bundler, Pumper, Zoorix, Unlimited Bundles and Simple Bundles don't list them.

8. How do I migrate from Nitro to Vitals?

List your live Nitro offers and the videos in its widget, then rebuild the offers in Vitals Product Bundles, Volume Discounts or BOGO, or with the AI Offer Generator. Test on a duplicate theme, switch off Nitro's app embed and custom CSS, delete its leftover discounts and uninstall. Vitals has no shoppable video, so keep a video app for those videos.