Checkout B | Checkout Upsells vs Spring Checkout Customizer
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 3, 2026 for Checkout B, Oct 13, 2026 for Spring Checkout Customizer.
The short answer
- Only Spring Checkout Customizer lists a free plan. Paid plans start at $199/month for Checkout B and $4.99/month for Spring Checkout Customizer.
- Checkout B lists 26 features Spring Checkout Customizer’s listing doesn’t mention, including Announcement bar, Checkout upsell, Click-through rates.
Head to head
- United States
- Germany
- United Kingdom
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Checkout Plus
- · Access to all features
- · Advanced Branding (Custom CSS + Fonts)
- · Analytics
- · Checkout Upsells
- · Customize Thank you & Order Status Pages
- · Customize Thank you & Order Status Pages
Free For All
- · Additionally 9+ features
- · Banner Block
- · Deliver Instructions Block
- · Gift Message Block
- · Upsell Image Block
Generate Revenue
- · Plus all features available in the free plan
- · Post Purchase Offer Block
- · Thank you page Block
- · Upsell & Cross-sell Block
Revenue Plus
- · Checkout Branding
- · Plus all features available in the free plan
- · Post Purchase Offer Block
- · Thank you page Block
- · Upsell & Cross-sell Block
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureCheckout Builder gives Shopify Plus merchants full control over Checkout with high-converting, extensible blocks. Add upsells, cross-sells, trust badges, custom messaging, dynamic content, and conditional logic—no code required. Built on Shopify Checkout Extensibility, it’s fast, secure, upgrade-safe, and fully compatible with Shopify updates.
Spring Checkout Customizer: Unlocking a suite of capabilities for upselling, cross-selling, post-purchase enhancements, and personalized features such as gift blocks and delivery instructions. Exclusive to Shopify Plus, seamlessly gather customer preferences, including gift notes and delivery instructions, using Custom Fields.
- Increase revenue w/ ROI-focused elements: conditional upsells, upgrades, & more.
- Add your branding to checkout with our advanced branding editor & live preview.
- Increase conversion with free shipping upsells & dynamic content for trust.
- Incorporate custom fields for gift messages, delivery notes, etc.
- Checkout Branding - Advanced branding configuration for your Checkout UI.
- Cross sell related products using the checkout upsell.
- Display a post purchase upsell page with one click upsell (checkout upsell).
- Personalize checkout Image Banner,Reward bar,Testimonial,Banner,Trustbadges etc.
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 |  Checkout B | Spring Checkout Customizer |
|---|---|---|
| Detected stores | 90 | 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, Home & Garden | Not published |
| Top store countries | United States, Germany, United Kingdom | Not published |
Reviews
| Measure | Checkout B | Spring Checkout Customizer |
|---|---|---|
| App Store rating | 5.0 ★ | Not published |
| App Store reviews | 108 | Not published |
| New reviews, 28 days | 0 | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | Checkout B | Spring Checkout Customizer |
|---|---|---|
| Free plan | Not listed | Yes |
| Lowest paid monthly plan | $199/month | $4.99/month(ahead) |
| Longest free trial | 7 days | 14 days |
| Plans listed | 1 | 3 |
Listing
| Measure | Checkout B | Spring Checkout Customizer |
|---|---|---|
| Shopify category rank | #160 | #936 |
| Shopify App Charts | #8 in Checkout - Other | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Sep 6, 2023 | Dec 13, 2023 |
| Languages | 1 | 2 |
| Developer | Checkout Builder | Tsomo Spring Solutions |
FAQ
Checkout B and Spring Checkout Customizer: common questions
- Is Checkout B or Spring Checkout Customizer cheaper?
- Only Spring Checkout Customizer lists a free plan. Paid plans start at $199/month for Checkout B and $4.99/month for Spring Checkout Customizer. 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?
- Checkout B lists 26 the others don’t mention, such as Announcement bar, Checkout upsell, Click-through rates, Conversion rates. 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 3, 2026 for Checkout B, Oct 13, 2026 for Spring Checkout Customizer; 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 3, 2026 for Checkout B, Oct 13, 2026 for Spring Checkout Customizer. 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.