Checkout | Flow 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 Oct 23, 2026 for Checkout, Oct 13, 2026 for Spring Checkout Customizer.
The short answer
- Only Spring Checkout Customizer lists a free plan. Paid plans start at $49/month for Checkout and $4.99/month for Spring Checkout Customizer.
- Checkout lists 14 features Spring Checkout Customizer’s listing doesn’t mention, including AI recommendations, Checkout upsell, Conversion rates.
Head to head
- Denmark
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Checkout + OE
- · Additional content
- · Analytics
- · Non Shopify Plus only
- · Order editing
- · Payment & delivery customization
- · Upsells on Thank you & Order status
Checkout Plus
- · Additional content
- · Analytics
- · Branding Editor
- · Capture information
- · Payment & delivery customization
- · Pre & post Checkout upsells
Checkout Plus + OE
- · Additional content
- · Analytics
- · Branding Editor
- · Capture information
- · Order editing
- · Payment & delivery customization
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 | Flow helps merchants increase revenue and customize Shopify checkout using Checkout Extensibility. Add upsells, free shipping bars, and checkout customizations across checkout, thank-you and order status pages. Add content such as text, banners, USPs, FAQs, forms like terms & conditions and sign-ups. Match your store design using the checkout branding API and track performance with built-in analytics.
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 sales with checkout upsells, order goals, free shipping or gifts
- Add custom forms to capture information & validate customers
- Add content text, links, button, images, banner, icons, surveys, FAQ & more
- Use the branding editor to perfectly match your store design
- 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 | Spring Checkout Customizer |
|---|---|---|
| Detected stores | 10 | 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 | Home & Garden | Not published |
| Top store countries | Denmark | Not published |
Reviews
| Measure | Checkout | Spring Checkout Customizer |
|---|---|---|
| App Store rating | 5.0 ★ | Not published |
| App Store reviews | 17 | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | Checkout | Spring Checkout Customizer |
|---|---|---|
| Free plan | Not listed | Yes |
| Lowest paid monthly plan | $49/month | $4.99/month(ahead) |
| Longest free trial | 7 days | 14 days |
| Plans listed | 3 | 3 |
Listing
| Measure | Checkout | Spring Checkout Customizer |
|---|---|---|
| Shopify category rank | Not enough data | #936 |
| Shopify App Charts | #9 on Featured by Shopify in Checkout - Other | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Apr 28, 2023 | Dec 13, 2023 |
| Languages | 1 | 2 |
| Developer | Nordic Apps | Tsomo Spring Solutions |
FAQ
Checkout and Spring Checkout Customizer: common questions
- Is Checkout or Spring Checkout Customizer cheaper?
- Only Spring Checkout Customizer lists a free plan. Paid plans start at $49/month for Checkout 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 lists 14 the others don’t mention, such as AI recommendations, Checkout upsell, Conversion rates, Custom rules. 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 23, 2026 for Checkout, 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 Oct 23, 2026 for Checkout, 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.