Blockify Checkout Customizer vs CartShield: Checkout Rules
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 4, 2026 for Blockify Checkout Customizer, Nov 3, 2026 for CartShield.
The short answer
- Both list a free plan. Paid plans start at $9.99/month for Blockify Checkout Customizer and $19.99/month for CartShield.
- Blockify Checkout Customizer lists 9 features CartShield’s listing doesn’t mention, including Cart alerts, Collection-specific, Custom branding.
Head to head
- United States
- United Kingdom
- Canada
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
FREE
- · 1 active single rule (Limited condition)
- · 24/7 Live chat support
- · Best for development stores
BASIC
- · 1 Hide dynamic payment
- · 1 active sync Payment, Shipping
- · 24/7 Live chat support
- · 3 active Shipping Discounts
- · 3 active checkout validation rules
PREMIUM
- · 24/7 Live chat support
- · No limit to set COD fee
- · Order Status Page Customization
- · Unlimited Checkout validation rules
- · Unlimited Payment & Shipping rules
- · Unlimited Shipping Discounts rules
SHOPIFY PLUS
- · All include in Premium
- · Checkout Page Customizations
- · Checkout Upsell & Discounts
- · Exclusive Shopify Plus Condition Set
- · Order Status Page Customization
- · VIP Tier Support
Free Starter
- · 1 Active Checkout Validation Rule
- · Community Support
- · Standard PO Box & Address Validation
- · Sub-5ms WebAssembly Edge Execution
Pro Protection
- · B2B wholesale carton multiples
- · Collection min and max spend limits
- · Custom checkout error messages
- · PO Box and delivery blocker
- · Priority 24/7 merchant support
- · Real-time loss prevention telemetry
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureBlockify brings powerful checkout customization and checkout rules to your Shopify store. Use Blockify Checkout Rules customizer, validate carts and addresses, set oder limits, and streamline payment and shipping. Reduce friction on checkout customization & stop spam and fake orders with checkout form, and boost AOV with checkout rules/blocks and post‑purchase blocks.
CartShield protects merchant profits by validating orders directly inside checkout using server-side Shopify Functions. Unlike legacy apps that rely on cart scripts bypassed by 1-click express wallets or browser tools, CartShield cannot be skipped. Prevent couriers from rejecting freight by blocking PO Boxes and parcel lockers.
- Manage your info validation, payment, shipping on checkout page in 1 dashboard
- Create & validate checkout rules by shipping address, customer, date time, cart
- Hide shipping/payment methods to tailor checkout experience for customers
- Hide Express Checkout button on checkout page
- Block PO Boxes and parcel lockers for heavy freight and restricted items
- Require qualifying catalog items to purchase discounted sample kits
- Enforce B2B wholesale case pack multiples like cartons of 6, 12, or 24
- Validate checkout server-side across express digital wallets and one-page flows
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure | Blockify Checkout Customizer | |
|---|---|---|
| Detected stores | 2,662 | Not published |
| Net store change, 28 days | +19 | 0 |
| Stores added, 28 days | 41 | Not enough data |
| Big-brand share | 17% | Not enough data |
| Top store categories | Apparel & Accessories, Health & Beauty, Home & Garden | Not published |
| Top store countries | United States, United Kingdom, Canada | Not published |
Reviews
| Measure | Blockify Checkout Customizer | |
|---|---|---|
| App Store rating | 4.9 ★ | Not published |
| App Store reviews | 316 | Not published |
| New reviews, 28 days | 8 | Not enough data |
| Reviewers a year or more in | 6% | Not enough data |
Pricing
| Measure | Blockify Checkout Customizer | |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $9.99/month(ahead) | $19.99/month |
| Longest free trial | 3 days | 14 days |
| Plans listed | 4 | 2 |
Listing
| Measure | Blockify Checkout Customizer | |
|---|---|---|
| Shopify category rank | #1 | Not enough data |
| Shopify App Charts | #1 in Checkout - Other | Not on this week’s charts |
| Built for Shopify | Yes | No |
| Launched | Aug 19, 2024 | Nov 3, 2026 |
| Languages | 1 | 1 |
| Developer | Blockify | ModApps |
FAQ
Blockify Checkout Customizer and CartShield: common questions
- Is Blockify Checkout Customizer or CartShield cheaper?
- Both list a free plan. Paid plans start at $9.99/month for Blockify Checkout Customizer and $19.99/month for CartShield. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- What features does each app list that the other doesn’t?
- Blockify Checkout Customizer lists 9 the others don’t mention, such as Cart alerts, Collection-specific, Custom branding, Custom messages. CartShield lists 3 the others don’t mention, such as Cart-based, Price-based, Product-specific. A feature missing from a listing may still be supported; this compares what each App Store listing says.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Nov 4, 2026 for Blockify Checkout Customizer, Nov 3, 2026 for CartShield; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Nov 4, 2026 for Blockify Checkout Customizer, Nov 3, 2026 for CartShield. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.