CartWisp: Checkout Validation vs SMART Checkout Upsells & Rules
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026 for CartWisp, Nov 8, 2026 for SMART Checkout Upsells & Rules.
The short answer
- Only CartWisp lists a free plan.
- CartWisp lists 10 features SMART Checkout Upsells & Rules’s listing doesn’t mention, including Custom notes, Custom rules, Free shipping.
Head to head
- Germany
- France
- Australia
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Basic Plan
- · 3 Active Checkout Rules Allowed
- · Basic Payment Method Restriction
- · Basic Preview and Rule Testing Mode
- · Checkout Blocking with Clear Messages
- · Control Maximum Quantity allowed per SKU
- · Free Forever with No Renewal Required
Starter Plan
- · 10 Active Checkout Rules Allowed
- · Country and State-based SKU Restrictions
- · Enforce Shipping Methods & Restrictions
- · Ground-only Shipping Enforcement
- · MOQ Rules by Customer Segment
- · P.O. Box Shipping Restriction
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureCartWisp helps Shopify merchants enforce checkout rules and validation to prevent invalid, non-compliant, and unfulfillable orders before they are placed. Create rules for MOQ, minimum order value, buyer eligibility, product restrictions, shipping controls, payment method limits, B2B checkout, and compliance workflows.
SMART Checkout Rules helps merchants control the checkout experience using flexible conditions. Validate checkout or hide, block, sort, or rename payment methods and shipping options based on rules like country, customer tag, cart value, product, or discount. Grow AOV with one-click post-purchase upsells and downsells, plus checkout blocks like banners, and discount codes.
- Block invalid orders before they reach fulfillment
- Enforce MOQ, MOV, and B2B buyer eligibility rules
- Restrict shipping methods, regions, and P.O. Boxes
- Control COD, BNPL, invoice, and risky payment methods
- Validate and block specific checkouts
- Customize and control payment methods
- Hide, sort, and rename shipping options
- Streamline the checkout experience for customers
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 |  CartWisp |  SMART Checkout Upsells & Rules |
|---|---|---|
| Detected stores | Not published | 31 |
| 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 | Not published | Apparel & Accessories, Home & Garden, Health & Beauty |
| Top store countries | Not published | Germany, France, Australia |
Reviews
| Measure | CartWisp | SMART Checkout Upsells & Rules |
|---|---|---|
| App Store rating | Not published | 5.0 ★ |
| App Store reviews | Not published | 849 |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | 4% |
Pricing
| Measure | CartWisp | SMART Checkout Upsells & Rules |
|---|---|---|
| Free plan | Yes | Not listed |
| Lowest paid monthly plan | $5/month | No monthly plan listed |
| Longest free trial | Not listed | Not listed |
| Plans listed | 2 | Not published |
Listing
| Measure | CartWisp | SMART Checkout Upsells & Rules |
|---|---|---|
| Shopify category rank | #150 | #2 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | Yes |
| Launched | May 20, 2026 | Sep 11, 2024 |
| Languages | 1 | 1 |
| Developer | Smaitik Ventures | SMART Upsells & Checkout |
FAQ
CartWisp and SMART Checkout Upsells & Rules: common questions
- Is CartWisp or SMART Checkout Upsells & Rules cheaper?
- Only CartWisp lists a free plan. 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?
- CartWisp lists 10 the others don’t mention, such as Custom notes, Custom rules, Free shipping, Hide express checkout. 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 Oct 13, 2026 for CartWisp, Nov 8, 2026 for SMART Checkout Upsells & Rules; 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 Oct 13, 2026 for CartWisp, Nov 8, 2026 for SMART Checkout Upsells & Rules. 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.