The 10 Best Cart Lock Apps for Shopify
The top 10 apps merchants see when they search the Shopify App Store for cart lock, in the exact order the store ranks them. Only Shopify's organic ranking is shown, never sponsored ads.
Updated September 8, 2026 · Organic rankingThe old way of changing checkout is gone. The template that once let stores edit it was retired in two stages, first for the information, shipping and payment steps and later for the thank-you and order status pages, and both dates have passed. What replaced it is a set of separate mechanisms with quite different plan requirements, which is the source of most confusion in this area.
The map is worth holding. Adding your own interface to the checkout steps themselves, and restyling checkout at all, are top-plan capabilities. Everything else is more open than people assume: content on the thank-you, order status and post-purchase pages works on every plan but the entry-level one, and so do the functions that hide, rename or reorder payment and delivery options, validate a cart, and apply discounts. Per-market checkout differences sit in between, needing one of the upper plans. So a standard-plan store cannot redesign checkout and can do a great deal around it.
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1
Cart Lock:Block Checkout Rules
Block orders by amount, quantity, discount, customer, shipping
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2
Options 3D Configurator: Next
Product Options, Custom Fields & 3D B2B Live Price Calculator
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3
Cart Block: checkout validator
Block or validate orders in product, cart and checkout page
Built for Shopify -
4
Shopify Checkout Blocks
Customize your Checkout, Thank you and Order status pages
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5
Layaway: Reserve & Deposit
Layaway helps reserve products & collect deposits at POS
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6
Essent Cart Drawer Cart Upsell
Lift AOV via Slide Cart Upsell, Sticky Add to Cart, Reward Bar
Built for Shopify -
7
Cartly Abandoned Cart Recovery
Abandoned cart recovery & checkout recovery with email popup
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8
Kaching CartDrawer Cart Upsell
Boost your AOV: slide cart, upsell cart & free shipping bar
Built for Shopify -
9
iCart Cart Drawer Cart Upsell
Boost AOV with slide cart drawer, cart upsell & progress bar
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10
Sami B2B Lock,Password Protect
Unlock exclusive pages, prices, and products for B2B customers
Built for Shopify
Built for ShopifyCompare the top 3 head-to-head
What to look for in a Cart Lock app
- This phrase is a compatibility badge as often as a category
- Much of what ranks here is a survey, upsell or loyalty app advertising that it is built on the current technology rather than the retired one. That is genuinely useful to know, and it is not the same as an app that customises checkout. Read for which you are looking at.
- Match the capability to your plan before comparing
- Almost every disappointment in this area is somebody on a standard plan buying a screenshot of the checkout page. Work out whether what you want lives on the checkout steps, which needs the top plan, or on the pages either side of them, which mostly does not.
- Ask what happens to it when Shopify moves again
- This whole area has been rebuilt once already, on a published timeline, and anything built on the old mechanism stopped working. A vendor who can tell you plainly which extension targets they use is one who will still be working after the next change.
Frequently asked questions
Which is the best Cart Lock app for Shopify?
Based on the Shopify App Store's own organic ranking for "cart lock", Cart Lock:Block Checkout Rules currently holds the #1 spot, with a 4.8 star rating across 84 reviews. The best choice for your store still depends on your requirements, so compare the top results above.
How is this ranking determined?
We record the organic results merchants actually see when searching the Shopify App Store for "cart lock", refreshed daily. Shopify's own sponsored ("Ad") results are excluded, so positions reflect its real search ranking rather than paid promotion. Source: the Shopify App Store search results for "cart lock", you can verify the current ranking there yourself.
Which Cart Lock apps are Built for Shopify?
4 of the top 10 cart lock apps hold the Built for Shopify badge: Cart Block: checkout validator, Essent Cart Drawer Cart Upsell, Kaching CartDrawer Cart Upsell, Sami B2B Lock,Password Protect.
What does the Built for Shopify badge mean?
Built for Shopify
Built for Shopify is the highest level of recognition Shopify awards an app. To earn
the badge, an app must meet Shopify's standards for safety, performance, ease of use,
and proven usefulness: it cannot slow down the admin, storefront, or checkout, must
integrate seamlessly into the Shopify admin, and must demonstrate quality through
installs, reviews, and ratings over time. When comparing similar apps, preferring
ones with the badge is a safe default.
Learn more about the Built for Shopify badge →
As of September 8, 2026, the top-ranked cart lock app on the Shopify App Store is Cart Lock:Block Checkout Rules, with a 4.8 star rating across 84 reviews. 4 of the top 10 carry the Built for Shopify badge, and the average rating is 4.8 stars across 4,304 reviews.
Related keyword rankings
Rank higher on the Shopify App Store
Rankbase helps Shopify app developers track keyword positions, analyze install click data, and optimize app listings to rank higher in the Shopify App Store.
Explore Rankbase →Built by Craftshift
Rankbase is made by Craftshift, a Shopify Partner building apps for product images, variants, and bulk catalog work. We built Rankbase to track the App Store rankings of our own apps first, then opened it to other developers, and this directory grew out of that work. The rankings on these pages are Shopify's own organic search results; we never edit them, including for our own apps.
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Rubik Variant Images & Swatch
Clean multiple variant images gallery & variant color swatches
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CS - Smart Bulk Image Upload
Save time with bulk upload images from Google Drive, Dropbox
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Rubik Combined Listings Swatch
Link products as variants w/ combined listings & color swatch
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CS - Export Product Images
Bulk export images, download product images to save time!