CartShield: Discount Blocker vs DCB ‑ Discount Code Blocker
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 12, 2026 for CartShield, Nov 13, 2026 for DCB.
The short answer
- Only CartShield lists a free plan. Paid plans start at $4.99/month for CartShield and $9/month for DCB.
- CartShield lists 4 features DCB’s listing doesn’t mention, including Coupons, Flat discounts, Tagging.
Head to head
- United States
- Australia
- United Kingdom
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Free
- · 1 blocking rule
- · 2 rule types only
- · Basic error messages
- · Block All & Specific Codes
- · Email support
- · Limited to 1 rule
Basc
- · 5 blocking rules
- · 5 rules max
- · 6 rule types
- · Priority support
- · Sale item blocking
- · Smart Discounts
Pro
- · All 9 rule types
- · Allow List (whitelist)
- · Customer tag blocking
- · Priority support
- · Priority-based evaluation
- · Product tag blocking
Lifetime
- · All future features
- · Early adopter price
- · Everything in Pro
- · One-time payment
- · Priority support forever
- · Smart Discounts
Basic
- · Allow selected discount codes
- · Block discount codes for all items
- · Block discount codes for sale items
- · Block discounts based on product tags
- · Block discounts for selected products
- · Compatible with most Loyalty apps
Shopify Plus
- · Analytics (track rescued revenue)
- · Discount value–based blocking
- · Everything in Basic plan
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureCartShield lets you control which discount codes are accepted at checkout and on products. Create rules to block all codes, specific codes, or codes based on products, collections, customer tags, or cart total. The Allow List lets you whitelist approved codes and block everything else. Smart Discounts apply discounts only to full-price items, skipping products already on sale.
DCB stops customers from applying discount codes to sale items (with a compare-at price), all products, selected products, or products by tag. Shopify Plus stores also get discount value–based blocking. Schedule blocking for sales to protect your margins. NOTE: If restricted products are in the cart, codes won't apply to the whole order (you can show a custom error message).
- Block discount codes by product, collection, customer tag, or cart total
- Allow List: whitelist specific codes and block all others at checkout
- Smart Discounts: apply discounts only to full-price items, not sale items
- Custom error messages per rule shown instantly to customers at checkout
- Block ALL discount codes for sale product with compare-at price
- Hide discount code input from cart and checkout
- Works with manual and automatic discounts
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 |  DCB | |
|---|---|---|
| Detected stores | Not published | 43 |
| Net store change, 28 days | 0 | +2 |
| Stores added, 28 days | Not enough data | 2 |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Apparel & Accessories, Health & Beauty, Home & Garden |
| Top store countries | Not published | United States, Australia, United Kingdom |
Reviews
| Measure | DCB | |
|---|---|---|
| App Store rating | Not published | 4.7 ★ |
| App Store reviews | Not published | 7 |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | DCB | |
|---|---|---|
| Free plan | Yes | Not listed |
| Lowest paid monthly plan | $4.99/month(ahead) | $9/month |
| Longest free trial | 7 days | 3 days |
| Plans listed | 4 | 2 |
Listing
| Measure | DCB | |
|---|---|---|
| Shopify category rank | Not enough data | #166 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Nov 12, 2026 | Jan 3, 2025 |
| Languages | 1 | 1 |
| Developer | Apps Developer | Viktoriia Pavlova |
FAQ
CartShield and DCB: common questions
- Is CartShield or DCB cheaper?
- Only CartShield lists a free plan. Paid plans start at $4.99/month for CartShield and $9/month for DCB. 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?
- CartShield lists 4 the others don’t mention, such as Coupons, Flat discounts, Tagging, Targeting. DCB lists 4 the others don’t mention, such as Automations, Bulk discounts, Custom code, Editor tool. 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 12, 2026 for CartShield, Nov 13, 2026 for DCB; 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 12, 2026 for CartShield, Nov 13, 2026 for DCB. 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.