Cart upsells
Cartly review
A cart drawer and upsell app for stores that want progress rewards, add-ons and checkout prompts in one cart experience.
Your current cart limits merchandising and reassurance
Think twice ifYour theme cart already does the required job
- Setup estimate
- Moderate setup
- Pricing checked
- Guide researched
What you can use it for
- Custom cart drawer
- Cart upsells and add-ons
- Progress and free-shipping bars
- Checkout and urgency controls
Product details, capabilities and integrations
Cartly is a Shopify app for improving the cart experience while presenting relevant add-ons and spend incentives. This guide separates the useful day-to-day job from the wider feature list so you can judge the operational fit before installing it.
Connections to check: Shopify Checkout, Theme cart, Discounts, Product recommendations. Confirm that your plan includes the connections you need.
How much does Cartly cost?
Paid tiers cover up to 100, 300 and 750 monthly store orders. Free development-store access is separate from live-store eligibility.
Pricing checked .Check current official pricing ↗Work out your monthly and yearly app costs, including usage fees and setup.
What should you compare it with?
See all upsell and cross-sell options →Getting started with Cartly
- 1
Choose one complementary product or bundle and check the profit after any discount.
- 2
Add the offer to one relevant part of the shopping journey.
- 3
Test cart changes and checkout on mobile. Compare profit and checkout completion, not just order value.
What you need before installing
Have these ready
- A measured baseline for cart-to-checkout rate
- A person responsible for setup, testing and ongoing review
- A documented rollback route if the customer journey breaks
Decisions to make first
- The single customer or operational problem to solve first
- Which products, markets and customer groups are included
- What result would justify keeping the app after the trial
- Which existing app or Shopify feature owns any overlapping job
Open the detailed setup guide (5 steps)
Define the first job
Write down the exact problem Cartly should solve, the customers or products in scope and the current cart-to-checkout rate.
Follow the official instructions ↗Configure the smallest useful version
Reproduce essential cart functions first, then add one complementary offer or progress incentive with explicit margin and eligibility rules.
Follow the official instructions ↗Check the connected journey
Review the storefront, Shopify admin, notifications, reports and any connected platforms. Remove duplicate features before publishing.
Follow the official instructions ↗Run realistic tests
Test add, remove, quantity, discount, free-shipping, subscription, out-of-stock and accelerated-checkout journeys on mobile and desktop.
Follow the official instructions ↗Measure before expanding
Run the controlled setup long enough to compare cart-to-checkout rate and incremental average order value with the saved baseline. Expand only when the evidence supports it.
Follow the official instructions ↗How to use and review it after launch
How to decide whether it is working
Check that the app still works after changes to your theme, checkout or connected tools. Review the result you installed it for, alongside its cost.
- Cart-to-checkout rate
- Incremental average order value
- Upsell take rate
- Cart interaction errors
Keep it if it solves a real problem. Simplify or remove it if the extra cost and work are not worthwhile.
Things to check before installing
- Your theme cart already does the required job
- Replacing the theme cart can affect several customer journeys.
- Too many prompts can reduce rather than improve conversion.
More limitations and common mistakes
- Pricing increases with monthly order volume.
- Installing Cartly without recording a baseline for cart-to-checkout rate.
- Switching on every available feature before the core journey has been tested.
- Treating app-reported revenue or activity as incremental without a controlled comparison.
Common questions
Is Cartly the right choice for every Shopify store?
No. It is strongest when your current cart limits merchandising and reassurance. Stores that your theme cart already does the required job should compare the alternatives before installing.
How should I test Cartly?
Record the relevant baseline, launch the smallest useful configuration, check the complete customer journey and compare the agreed metric after enough traffic or orders have accumulated.
How much work does Cartly take to set up?
Moderate setup is the current planning guide. Before installing it, confirm a measured baseline for cart-to-checkout rate, a person responsible for setup, testing and ongoing review, a documented rollback route if the customer journey breaks, then test the complete customer and operational journey.
What should I measure after launching Cartly?
Start with cart-to-checkout rate, incremental average order value, upsell take rate. Compare those measures with the pre-launch baseline and include app cost and operating time.
Sources and how we put this guide together
This is a research-based guide, not a claim that we have personally tested every feature. Prices and product availability can change.
- Cartly current pricingChecked 2026-09-07