AB Check: Payment A/B tests vs Checkout Assurance
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 8, 2026 for AB Check, Oct 13, 2026 for Checkout Assurance.
The short answer
- Paid plans start at $19.95/month for AB Check and $99/month for Checkout Assurance.
Head to head
- France
- United Kingdom
- Brazil
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Premium Plan
- · Automated traffic allocation
- · Payment gateway performance breakdown
- · Priority email support
- · Real-time conversion analytics
- · Unlimited A/B tests for payment methods
Advanced
- · CSV Export
- · Error categorization And Failure Log
- · Failure Log and History
- · Instant Email Alerts With Failure Reason
- · Priority support
- · Real-Time Checkout Failure Detection
Enterprise
- · All Advanced Plan Features
- · Custom CRM integrations
- · Instant SMS Alerts (via Twilio)
- · Priority support
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureAB Check helps Shopify merchants evaluate payment method setups using controlled A/B tests in checkout. By comparing variants with real customer traffic, merchants can understand how payment configurations affect conversion rate, AOV, and revenue. Real-time analytics and a built-in kill switch help merchants make informed decisions while reducing risk when changing checkout settings.
Checkout failures happen silently. Payment declines, shipping errors, and abandoned checkouts go undetected while merchants lose revenue with no way to respond. Checkout Assurance monitors your store's checkout in real time and sends instant alerts with the customer's name, email, and phone number so you can act instantly.
- A/B test payment methods directly in Shopify checkout
- Real-time analytics for conversion, AOV, and revenue
- Random traffic splits with consistent cart-based assignment
- Kill switch to instantly disable active checkout experiments
- Real-time alerts for payment declines with customer contact details
- Abandoned checkout detection with instant merchant email notification
- Summary analytics showing the top errors your customers face at checkout
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 |  AB Check |  Checkout Assurance |
|---|---|---|
| Detected stores | 18 | Not published |
| Net store change, 28 days | +1 | 0 |
| Stores added, 28 days | 1 | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Health & Beauty, Apparel & Accessories, Home & Garden | Not published |
| Top store countries | France, United Kingdom, Brazil | Not published |
Reviews
| Measure | AB Check | Checkout Assurance |
|---|---|---|
| App Store rating | Not published | 5.0 ★ |
| App Store reviews | Not published | 2 |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | AB Check | Checkout Assurance |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | $19.95/month(ahead) | $99/month |
| Longest free trial | Not listed | 3 days |
| Plans listed | 1 | 2 |
Listing
| Measure | AB Check | Checkout Assurance |
|---|---|---|
| Shopify category rank | #197 | #188(ahead) |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Feb 25, 2026 | May 4, 2026 |
| Languages | 1 | 1 |
| Developer | Nextools | Checkout Assurance |
FAQ
AB Check and Checkout Assurance: common questions
- Is AB Check or Checkout Assurance cheaper?
- Paid plans start at $19.95/month for AB Check and $99/month for Checkout Assurance. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- 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 8, 2026 for AB Check, Oct 13, 2026 for Checkout Assurance; 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 8, 2026 for AB Check, Oct 13, 2026 for Checkout Assurance. 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.