If you want to increase sales on your e-commerce site, marketing tactics such as upselling and cross-selling are effective. "Monster Cart Upsell+Free Gifts" is the app that lets you implement these kinds of tactics on your Shopify store.
"What kind of app is Monster Cart Upsell+Free Gifts? What can it do?"
"Show me how to use Monster Cart Upsell+Free Gifts"
Reading this article will answer questions and needs like these.
Monster Cart Upsell+Free Gifts is a Shopify app that lets you implement a variety of marketing tactics on your Shopify store, such as upselling and cross-selling. It also comes packed with many other features that help boost sales, including automatic free gift addition and a progress bar.
This article explains the features, benefits, points to note, and how to use Monster Cart Upsell+Free Gifts. If you're considering adopting Monster Cart Upsell+Free Gifts, please use this as a reference.
What Is the Shopify App "Monster Cart Upsell+Free Gifts"?
Image source: Monster Cart Upsell+Free Gifts｜Shopify App Store
Monster Cart Upsell+Free Gifts (hereafter, Monster Cart Upsell) is a marketing app for Shopify stores. It provides various features designed to increase customers' purchasing motivation and get them to buy more products. For example, it can offer a free gift for purchases above a certain amount, suggest related products based on the contents of the cart, and apply discounts based on the quantity purchased.
These marketing features blend naturally into your site's design and can be introduced without disrupting the user's purchasing experience.
Monster Cart Upsell can be configured directly in the Shopify admin, so even people with no web knowledge can set it up intuitively. A 10-day free trial is offered, so you can check whether it suits your store before committing fully.
A Note on Using Monster Cart Upsell: Configuration Is in English Only
The configuration screen for Monster Cart Upsell only supports English. In addition, the Shopify admin screen where this configuration is done is not supported by browser translation features (such as Google Translate). If you're not comfortable with English, be aware that you'll need to translate each piece of English text one by one using a translation app while configuring it.
There is a help page available, but it is also only in English. If you're not confident in your English, we recommend using a marketing app that supports Japanese.
Monster Cart Upsell's Main Features and What It Can Do
Monster Cart Upsell is a multifunctional marketing app. Here we've selected and explain 5 of its main features and capabilities. Note that this information is based on data as of May 2025.
Automatic Free Gift Addition to Cart
This feature automatically adds a free gift to the cart when a customer meets certain conditions. For example, you can set up something like "add a free gift for purchases over 5,000 yen." Customers don't need to manually add the item to their cart themselves — the gift is automatically added once the conditions are met, providing a seamless purchasing experience.
This feature works well for offering samples of new products or trial samples of higher-tier products.
Discounts Based on Purchase Quantity
This is a feature (Buy More, Save More) that increases the discount rate (or discount amount) in stages depending on the quantity of products a customer purchases. For example, you can set up something like "5% off for 1 item, 10% off for 2 items, 15% off for 3 or more items."
Since customers receive a bigger discount by purchasing more, this creates an incentive to increase the quantity purchased.
This feature is well-suited to products with bulk-buying needs, such as daily necessities and food items.
Suggestions for Products Frequently Bought Together
This is a feature (Frequently Bought Together) that displays product B, which pairs well with product A currently in the cart, under a label like "Frequently bought together."
For example, it's effective to suggest conditioner to customers purchasing shampoo, or a protective case or charger to customers purchasing a smartphone. Since compatible products can be added with a single click, this increases convenience for customers while encouraging additional purchases.
The trigger product A can be selected from "all products," "products in a specific collection," or "specific products," and the suggested product B can be selected from "products in a specific collection," "specific products," or "Shopify recommendations."
Encouraging Additional Purchases with a Progress Bar
A progress bar is a display bar that visually communicates a customer's progress toward a purchase amount, such as how much more they need to spend to receive a benefit.
For example, you can set goals such as "Free shipping when you spend 3,000 yen more" or "10% off for orders over 5,000 yen." This creates a psychological effect where customers think "let me buy a little more."
Because it's a simple yet visually clear way to appeal to customers, it's a highly effective feature.
One-Click Upsell
This is an upsell feature that lets customers easily purchase additional services or products with a single click. For example, you can propose shipping protection services, gift wrapping, extended warranties, and more through a simple interface.
Since items can be added to the cart instantly without going through a tedious process, this makes it possible to sell value-added services while minimizing stress for the customer.
Benefits of Adopting Monster Cart Upsell on Shopify
Here are 3 main benefits of adopting Monster Cart Upsell on Shopify.
Increased Average Order Value (AOV)
Monster Cart Upsell provides many upsell and cross-sell features that encourage customers to purchase more during the buying process. Using these can increase the average amount spent per order.
For example, displaying a progress bar that says "Free shipping when you spend 1,000 yen more" creates a psychological effect in customers of wanting to make an additional purchase to receive the benefit. Suggesting "frequently bought together" products can also lead to purchases of related products the customer hadn't originally planned to buy.
Increasing average order value directly leads to higher sales.
Improved Customer Experience
Monster Cart Upsell makes natural suggestions through a polished cart or order confirmation page, rather than annoying pop-ups. It's also packed with features that reduce hassle for customers, such as automatic free gift addition and automatic application of free shipping.
This provides a smooth, stress-free purchasing experience that doesn't interrupt the buying flow, greatly contributing to improved customer satisfaction.
A Variety of Promotional Strategies in a Single App
Monster Cart Upsell consolidates a variety of promotional methods into a single app — upselling and cross-selling in the cart, offering free gifts based on purchase amount, and displaying a progress bar toward reaching a goal.
Since there's no need to introduce and manage a different app for each individual tactic, you can implement sales-boosting measures while reducing the time and cost of running your store.
Monster Cart Upsell Pricing Plans
Monster Cart Upsell's pricing varies based on the number of monthly orders. There's no difference in features or support based on the monthly fee.
The relationship between monthly order count and monthly fee is as follows.
| Monthly Orders | Monthly Fee |
|---|---|
| 〜50 | $12.99 |
| 51〜200 | $21.99 |
| 201〜500 | $36.99 |
| 501〜1,000 | $56.99 |
| 1,001〜2,000 | $91.99 |
| 2,001〜3,000 | $116.99 |
| 3,001〜 | $134.99 |
Monster Cart Upsell offers a 10-day free trial, so if you're interested, it's a good idea to try it out first. Note that this information is based on data as of May 2025.
How to Set Up the Shopify App Monster Cart Upsell
Here's how to set up Monster Cart Upsell.
First, install "Monster Cart Upsell+Free Gifts" from the Shopify App Store.
Image source: Monster Cart Upsell+Free Gifts｜Shopify App Store
Your Shopify store will show an install confirmation again, so click "Install."
Image source: Shopify admin
Once the install is complete, a subscription approval screen will appear, so click "Approve." Since there's a 10-day free trial, you won't be billed at this point.
Monster Cart Upsell's settings screen will appear within the Shopify admin, along with a brief survey. Answering is optional. Close it using the "x" in the top right of the window.
Initial Setup and How to Use the Shopify App Monster Cart Upsell
First, let's do the initial setup. The screen will show a 3-step "Setup Guide," so let's follow along with it.
Image source: Shopify admin
Step 1. Cart Design Settings
Configure the design of the cart that appears when a product is added. Click "Open Cart Setup" next to the "1. Review Monster Cart Design" item.
The cart setup screen will appear. Various setting items are shown in the center of the screen, and a cart preview is shown on the right.
The main items you can set on this screen, and their settings, are as follows. They're listed here according to the actual on-screen labels.
- Basic Cart Design: basic cart design settings
- Default language: default language (English, French, German, or Arabic only)
- Colors: text, button, and background colors, etc.
- default font size: font size
- choose font: font typeface
- Advanced Design Settings: advanced design settings
- header: cart heading
- cart: how products in the cart are displayed, etc.
- Auto discount style: discount display text and color
- Subscription upgrades: settings related to subscriptions
- Checkout Button: purchase button
- coupon code form: coupon code
- Extra Features: additional features
- Split Payments: installment payments
- Scarcity Timer: countdown timer
- Trust Badges / images: trust badges
- Terms And Conditions: terms of service
- Announcement Banner: announcement bar
- Advanced Cart Settings: advanced cart settings
- Custom CSS: CSS customization
Since it's not displayed in Japanese, those who aren't comfortable with English will need to translate the English text piece by piece. However, the configuration itself isn't that difficult. Note that although Japanese isn't among the supported languages, if you enter Japanese text into the various input fields, that Japanese text will be displayed in the cart.
Once you've finished configuring, click "Save" to save your changes.
Step 2. Enable the App in Your Theme
Next, enable the app in your theme. Click "Enable/Disable Cart" next to the "2. Activate Monster Cart" item.
Instructions for the configuration method will appear, so click "Open Editor."
The theme editor will appear, and the "App embeds" menu will be shown automatically. Enable the "Enable Monster" switch, then click "Save" in the top right.
Step 3. Create a Campaign
The final step of the setup guide is to create a campaign. Click "Add Upsells" next to the "3. Activate Upsell Campaigns" item.
The campaign creation screen will appear. Various setting items are shown in the center of the screen, and a cart preview is shown on the right.
Enter a campaign name in "choose a name for the campaign," and choose the campaign type in "select a campaign type." There are 3 campaign types:
- Add To Unlock + Frequently Bought Together: free gifts, free shipping, related product suggestions, etc.
- Buy More Save More: discounts based on quantity purchased
- One Tick Upsell: adding accessory products to the cart, etc.
This article introduces the "Buy More Save More" configuration.
The setting items vary depending on the campaign selected. For "Buy More Save More," "Create Offer" is the key setting section.
Enter the threshold quantity in "Quantity." For the discount condition once that quantity is exceeded, choose from "%" (rate) or "JPY" (fixed price) and enter the specific rate or amount. Discounts can be set in multiple tiers.
In the sample configuration image below, the top row is set to "10% off when quantity is 2," and the bottom row is set to "1,000 yen off when quantity is 3 (or more)."
Click "Save&Active" on the screen and check it out on the actual site.
Adding one item to the cart shows the discount campaign offer displayed in the cart.
Changing the quantity to 2 applies a 10% discount to the total amount.
Changing the quantity to 3 applies a 1,000 yen discount to the total amount.
That covers "Buy More Save More." For instructions on creating other campaign types, refer to the Monster Cart Upsell help page.
[Bonus] An Easy-to-Use, Japanese-Made Gift Distribution App
RuffRuff Order Bonus
RuffRuff Order Bonus is a Shopify app that lets you implement a variety of promotional measures (discounts and gift distribution) under any conditions.
Compared to Monster Cart Upsell+Free Gifts, since it's developed by a Japanese company, the admin screen, help page, and customer support are all available in Japanese, so you can use it with peace of mind when you run into trouble. It's also attractive that all features are available at an affordable pricing plan.
Using RuffRuff Order Bonus, you can implement measures such as:
- Free shipping exclusively for VIP members
- Discounts by membership tier
- Volume discounts
- Discounts when a specific product is included
- Discounts for customers with 10 or more past purchases
- First-come, first-served discounts (20% off for the first 10 customers)
- Gift distribution exclusively for members
- Sample distribution for a specific product purchase
- Distributing summer trial samples during a spring-only campaign
- Novelty giveaways for orders over 10,000 yen
and more.
Since the app is developed by a Japanese company, Japanese-language support is robust, so even those who aren't comfortable with English can use it with confidence.
RuffRuff Order Bonus Pricing Plans
- Monthly billing: from $9.90/month
- Annual billing: from $99/year ※ Equivalent to 2 months free compared to monthly billing
The blog article below introduces how to distribute novelty items using RuffRuff Order Bonus. Please use it as a reference.
Adopt Monster Cart Upsell and Aim to Boost Your Sales
This article explained Shopify's marketing app Monster Cart Upsell.
By adopting this app, you can introduce a variety of features to your Shopify store, such as free gift offers, Buy More Save More, and one-tick upsells. Using these can be expected to increase average order value, boost sales, and improve customer satisfaction.
On the other hand, the settings screen doesn't support Japanese. This may make it a bit hard to use for those who aren't comfortable with English. For such people, a Japanese-supported marketing app is recommended.
Use the information in this article as a reference to adopt Monster Cart Upsell and aim to boost your store's sales.
The blog article below introduces recommended free gift apps and discount apps other than Monster Cart Upsell. Please use it as a reference.
