Cart Block: checkout validator vs Puco Validation: Order Limits
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 9, 2026 for Cart Block, Oct 20, 2026 for Puco Validation.
The short answer
- On the Shopify App Store: Cart Block 4.7 from 26 reviews and Puco Validation 5.0 from 9 reviews.
- Both list a free plan. Paid plans start at $3.99/month for Cart Block and $3.90/month for Puco Validation.
- Cart Block lists 5 features Puco Validation’s listing doesn’t mention, including Cart alerts, Discount-based, Geolocation.
Head to head
- Australia
- Singapore
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
FREE DEV
- · Free for Shopify Plus sandbox stores
- · Free for dev stores
Premium Plan
- · - All Free Plan included
- · - Block Cart
- · - Block Checkout
- · - Premium Support
- · - Prevent Fraud
- · - Unlimited Checkout Validation Rules
Advanced Plan
- · - All Premium Plan included
- · - Block Cart And Checkout
- · - Mix Different Conditions
- · - Premium Support
- · - Target Specific Markets
- · - Unlimited Checkout Validation Rules
Ultimate Plan
- · - All Advanced Plan included
- · - Block Discount Codes
- · - Block with Specific Delivery Method
- · - Block with Specific Payment Method
- · - Premium Support
- · - Shopify Plus Only
Free
- · Create 1 checkout validation
- · Validation is ALWAYS applied
Pro - Early Bird 1
- · 100% setup support if needed
- · Apply based on multiple conditions
- · Create more checkout validations
- · Lifetime discount for early customers
- · Unlock all 30 different conditions
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureCartBlock's customizable conditions allow you to set specific rules, blocking purchases an orders based on criteria like product quantity, country, customer profiles, discount code and much more making it the perfect solution for blocking customers or bots. It maintains transparency through warnings and messages at critical points, ensuring customers are well-informed.
Take full control of your checkout process by creating custom validation rules. Whether it's blocking bots, restricting PO boxes, or enforcing order limits, our solution ensures only valid and profitable orders go through. Ideal for stores facing issues with fraud, incorrect addresses, or unwanted orders, this app simplifies management and reduces costs.
- Block or validate purchase in product, cart and checkout page.
- Display warnings and messages on product pages, cart pages, and during checkout.
- Bots Block: protect your store from fraudulent transactions trough transparency.
- Built using "Native Shopify Functions” = Faster and More Integrated
- Tailor validation for orders with specific tags, quantities, address, 30+ more
- Block suspicious transactions and invalid addresses to reduce fraud.
- Instant checks on product, cart, and checkout pages using Shopify Functions.
- Display custom error messages in multiple positions
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 |  Cart Block |  Puco Validation |
|---|---|---|
| Detected stores | 2 | Not published |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Apparel & Accessories, Electronics | Not published |
| Top store countries | Australia, Singapore | Not published |
Reviews
| Measure | Cart Block | Puco Validation |
|---|---|---|
| App Store rating | 4.7 ★ | 5.0 ★(ahead) |
| App Store reviews | 26(ahead) | 9 |
| New reviews, 28 days | 2(ahead) | 0 |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | Cart Block | Puco Validation |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $3.99/month | $3.90/month(ahead) |
| Longest free trial | 7 days | 7 days |
| Plans listed | 4 | 2 |
Listing
| Measure | Cart Block | Puco Validation |
|---|---|---|
| Shopify category rank | #11(ahead) | #73 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | Yes | No |
| Launched | Feb 2, 2024 | Aug 16, 2024 |
| Languages | 1 | 1 |
| Developer | Nextools | Puco.io |
FAQ
Cart Block and Puco Validation: common questions
- Is Cart Block or Puco Validation cheaper?
- Both list a free plan. Paid plans start at $3.99/month for Cart Block and $3.90/month for Puco Validation. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- Which has better reviews, Cart Block or Puco Validation?
- On the Shopify App Store: Cart Block 4.7 from 26 reviews and Puco Validation 5.0 from 9 reviews.
- What features does each app list that the other doesn’t?
- Cart Block lists 5 the others don’t mention, such as Cart alerts, Discount-based, Geolocation, Payment methods. 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 9, 2026 for Cart Block, Oct 20, 2026 for Puco Validation; 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 9, 2026 for Cart Block, Oct 20, 2026 for Puco Validation. 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.