Monster CartUpsell — Free Gift

by Monster Apps · Free plan available.

4.7 (488) on Shopify Used by 7,902 Shopify stores

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Boost revenue with cart upsells, product page volume discounts, free gifts & progress bar rewards

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About Monster CartUpsell — Free Gift

Monster Cart helps merchants increase average order value across their entire store. On product pages, Buy More Save More volume discount widgets encourage larger purchases. In the cart drawer, progress bars unlock free gifts, free shipping, and store credit rewards. Smart upsells powered by Shopify recommend products customers actually want. One tick upsells add shipping protection, warranties, and extras. Fully customizable design with a dedicated team to match your brand. Customizable Slide Cart Drawer that matches your brand perfectly Add To Unlock Progress Bar + Free Gift, Discounts & Promotions and Free Shipping One Tick Upsell Offers for Shipping Protection, Priority Processing, Warranties Product Page Volume Discounts, Buy More Save More tiered pricing widget Frequently Bought Together with Shopify Machine learning or manual selection Show more Show less

Last verified: July 12, 2026 · Fresh

App details

Developer: Monster Apps
Category: Marketing & conversion
Pricing: Free plan available
Rating: 4.7 (488) on Shopify

Key features

Boost revenue with cart upsells, product page volume discounts, free gifts & progress bar rewards

Integrations with:

Appstle + Recharge, Checkout, Kaching + Pumper, Pagefly, Redeemly, Shopify Admin, Transcy + Weglot, Wide Bundles

3 plans · starts free · 10-day free trial

Free

$12.99/month

$21.99/month

Plans and prices as listed on the Shopify App Store.

Ratings & reviews

based on 97 Shopify App Store reviews

Use the arrows to read individual reviews

I had an issue and reached out to the support team. They replied incredibly fast and were so helpful and supportive. Highly recommend this app!!!

— VELUNA

Amazing customer service — TY has been super helpful! Love how flexible the customisation is across different cart types. We had a few hiccups with integration, but the dev team helped us sort it out quickly.

— Rejuvaus

Great app for cart upsell offers — exactly what I needed for my store. The support team resolved my issue perfectly, the only thing they could improve is their response time. Highly recommend!

— Aroluxe

Very happy to give the support team a 5 star review! I was going live with a promotion and I noticed the night before the drop downs were not working as I just upgraded to V2 of the app. The team were straight onto it and resolved it quickly. Always super helpful even when the customer (i.e. me) was in panic mode. Thank you!!

— Bespoke Hearts

Really great customer service with prompt replies and quick actionable solutions. Great app overall!

— We Are Feel Good Inc.

Excellent app and service above expectations. Fast, friendly help and always gets a solution to any question or problem. We have been using this app since March 2023. Highly recommended!

— Brilani

amazing app that converts, great and speedy customer service

— Mimm

Good app, Have definitely noticed an increase in AOV with the progress bar integrated into the checkout

— Only Socks

I just downloaded this app, actually started with another one but then swithced to this one becuase this one had more and better features such as the sticky add to cart combined with everything else. Had some issues setting it up but the support has been really quick and so far managed to solve everything I have asked for :) very satisfied!

— nattnatt

I am very new to Monster Cart but over the last 2 weeks have needed help and clarification on a number of issues during a Mothers Day campaign. The response time was very quick and the advice was clear and concise making it very easy to implement the updates on my website. I feel confident that i can navigate the cart myself without relying on others to assist me in the future. Highly recommend th...

— A Sack Of Wheat

Great customer service, quick and very helpful! Highly recommedn the Monster Cart for flexablity of cart options.

— Lawn Tips

Super helpful service with any issues

— hākinakina

App is blocking the zoom feature on my store from working on mobile. I found this out by disabling all app embeds and restoring them one by one, testing the zoom feature each time. When I enabled this app, the zoom feature went away again. Reached out to customer service and that was useless. Decided to uninstall the app and found a free alternative while searching.

— Flour Covered Home

Doesn't attribute sales. Meaning I have no idea if the app is driving any value. 'just trust me bro' is a bad value proposition

— DeadEyeVR

The discount calculation is weird and shows up differently in check out. I had so many customers asking. The App has lots of bugs and a very bad support. I moved to Unicorn Cart eventually.

— Magic T

Decent app, but picked up that they are duplicating their charges every month. They charge a monthly fee + usage & a monthly fee again. I reached out to their support 2 weeks ago and keep getting a general response that they've passed on the message to the team leader, but still no response. Can you please refund and fix your charges ASAP? Check your charges on your monthly bill!

— Bling My Ride

I canceled the plugin, but they still charged me on my monthly bill. I emailed them requesting a refund, but they haven't responded for five days. I was considering whether to reinstall it in the future, but their attitude has left me disappointed.

— polymerholster

unfortunately support is ghosting me and is not answering to any of my tickets. App stopped working and 20% of orders are not discounted.

— Kiss the Dog

Warning this does NOT work with product variants. It also does not work with subscription products (i.e., excluding subs from upsells) Their product says "fully compatible with product variants" but that does not mean it's possible to do a product upsell with a specific variant. Instead it means that it can apply in the same way to all variants of a product.

— Push Gummies