Squeeze more money out of every customer

An extremely fast and highly customizable slide cart drawer with powerful Upsell Campaigns.

🔥 Average Return on Investment = 2026%

Why Monster Upsells Cart?

🔥 Upselling on steroids... without being salesy!

MonsterUpsells converts so well because (unlike other pop-up upsell apps)
it doesn't interupt your customers on the way to the checkout.

Introducing - Monster UpsellCart

The Shopping Cart That Upsells For You.

How does it work?

1.  Customize your cart

2.  Create powerful Upsell Campaigns

3.  Launch 🚀

Start Upselling in minutes!​


Tired of wasting money on over priced Shopify upsell apps that not only look ugly and devalue your products... but also COST YOU SALES...?


Powerful Upsell Campaigns

Add X to unlock, One tick upsell, Buy more save more (Tiered pricing), Frequently bought together and many more coming!


Increase Conversions Rates

STOP decreasing conversion rates and annoying customers with pop-ups! The slide cart Upsells without the customer even knowing!


Design Your Ultimate Cart

Extremely customizable! Built For Stores That Care About Their Conversion Rates As Well As Their Branding. Cash On Delivery Checkout - COD

Don't Forget To DO THE MATHS!

Imagine You Made A Few Extra $$$ On Every Order! How Much Is That Worth To You?

Monster Campaigns & Features


Add X To Your Cart, Get Free X

Set Goals For Your Customers To Achieve To Unlock Specific Rewards. (Free Shipping, 10% Off)


Buy 2 Save $, Buy 8 Save $$$!

A Tiered Discount System To Encourage Customers To Buy More Of A Product!


Tick The Box Add $X

A Check Box For Adding A Little
Extra $ To The Cart.

Frequently Bought Together

You Probably Need A Unicorn Too... 😉🦄

Suggest No-Brainer Products Within The Cart That Can Be Added With One Simple Click!


Design Just About Everything!

Built For Stores That Care About Their Conversion Rates As Well As Their Branding.


Upsell Reports In Real Time

Gain Quick Insights Into Which Campaigns Are Converting Best And Make Informed Decisions Using Data From Our Analytics Dashboard.


UpsellCart Will Never Stop Growing!

Don't Just Think UpsellCart ... Think UpsellStore!!!

MonsterUpsells Pricing

Store Sales App Price
0-50 $7.99
51-200 $14.99
201-500 $29.99
501-1000 $49.99
1001-2000 $84.99
2001-3000 $99.99
3001+ $129.99
Store Sales App Price
0-50 $7.99
51-200 $14.99
201-500 $29.99
501-1000 $49.99
1001-2000 $84.99
2001-3000 $99.99
3001+ $129.99

Here Are Some Testimonials...

Our customers love what we do!

⭐️⭐️⭐️⭐️⭐️ - Bee Kind
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Literally within the first 12 hours of turning on the app and optimizing upsells, we were able to boost our AOV by 20%.

The best part is we only used one upsell option, and there are three It makes so much sense to offer your customers a few similar products that could be either an upgrade or just an add on You can tell the app is new and innovative. It works and is optimized much better than any other cart app on the market
⭐️⭐️⭐️⭐️⭐️ - Deeto
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MonsterUpsells has been a game changer for our store!

We saw increased AOV within days of installing the app, so it literally paid for itself in the first couple of orders. We had tried a few post-purchase upsell apps in the past and just weren't 100% happy with the user experience. With Monster, I was immediately drawn to the fact that the upsells are displayed inside the cart drawer (thereby skipping Shopify's boring cart page & getting our customers to the checkout faster). The app is also really easy to set up, with great design features & thoughtful touches like emojis, progress bars & even animated confetti! Absolutely love it.
⭐️⭐️⭐️⭐️⭐️ - BAGO
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The customer service of this app is just amazing! They responded to all of my questions, helped me by going on the code of my website and much more ! And all that with a respond time of less than 5 minutes.

I love it 🙂 And concerning the app itself, it is really good and I really enjoy how we can customize our cart and increase our AOV so easely and without annoying the client with popups. I just tried it one day for right now, but I really think it is going to be a game changer. Thank you very much MonsterUpsells 😀
⭐️⭐️⭐️⭐️⭐️ - Jeriae
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Amazing app, and crazy high conversion rate compared to any other alternative I tried in the past, I will be using it for a long time now!

This Shopify Upsell App will easily pay for itself

Contact our team at support@monsterapps.shop​

Find our apps listed at https://apps.shopify.com

"monsterapps" is a brand of "MONSTER APPS LTD". Registered in England and Wales No: "12642118"​
24-26 Arcadia Avenue, Launchese, London, N3 2JU, United Kingdom
PH: +44 20 3481 5527