Checkout Extensions vs UpsellPlus Checkout Upsell
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 2, 2026 for Checkout Extensions, Nov 8, 2026 for UpsellPlus Checkout Upsell.
The short answer
- Both list a free plan. Paid plans start at $9.99/month for Checkout Extensions and $49/month for UpsellPlus Checkout Upsell.
- UpsellPlus Checkout Upsell lists 17 features Checkout Extensions’s listing doesn’t mention, including A/B testing, AI recommendations, Announcement bar.
Head to head
Grow AOV, post-purchase, BOGO, offers, funnels, gifts
- United States
- United Kingdom
- Sweden
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Free
- · 1 post-purchase upsell offer
- · Analytics
- · Custom messages & terms checkbox
- · Email & live chat support
- · Order validations & limits
- · Payment & shipping method rules
Starter
- · Checkout upsells, free gifts
- · Checkout-step blocks need Shopify Plus
- · Email & live chat support
- · Image banners & gift wrap message
- · Non-Plus: all Thank you page blocks
- · Post-purchase upsell + call to action
Growth
- · Call to action & contact info blocks
- · Email & live chat support
- · Everything in Starter
- · Shopify Plus stores only
- · Trust badges & payment icons
Plus
- · A/B testing for checkout blocks
- · Everything in Growth
- · Priority support
- · Shopify Plus stores only
- · Surveys & forms
- · Testimonials & line item ratings
Free
- · Analytics
- · Build for free. Launch with a free trial
- · Checkout Upsells (Plus only)
- · Choose from all 12 upsell types
- · Product, Cart, Post-purchase upsells
Launch
- · Cart Page, Pop-up & Drawer Upsells
- · Earn back fees with UpsellPlus Earn
- · Free Gifts
- · Multivariate A/B testing
- · Post-purchase Upsells
- · Product Page Upsells
Shopify Plus
- · AI recommendations
- · Checkout Customization
- · Checkout Upsells
- · Earn back fees with UpsellPlus Earn
- · Everything in Basic, plus:
- · Thank You Page Customizations
Scale
- · Checkout & TY page Customization
- · Checkout Upsells
- · Earn back fees with UpsellPlus Earn
- · Everything in Basic, plus:
- · Live support with 30s replies
- · Multivariate A/B Testing
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureEnhance your Shopify checkout with smarter personalization and conversion optimization. Customize Checkout, Thank You, and Order Status pages based on cart, customer, and order data. Use flexible rules, AI-powered experiences, and A/B testing to deliver more relevant content and offers, improve engagement, and increase average order value (AOV).
UpsellPlus helps increase average order value with personalized upsells and cross sells across product pages, cart drawers, checkout, post purchase, thank you, order status and customer account pages. Staff can also upsell in store with offers on the Shopify POS home screen, added in one tap. Create one click post purchase offers, free gifts, subscription upgrades and checkout customizations.
- Checkout Upsells & Gift with Purchase Offers
- Trust Badges, Payment Icons & Testimonials
- Surveys & Custom Forms
- Post-Purchase Offers & Banners
- Customize checkout, cart and post-purchase page with upsells and customizations
- Upsell one-off purchases to subscriptions to grow your recurring revenue
- Add custom fields to checkout page for gift message, delivery date/notes
- A/B test checkout upsells to learn what works best
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 Extensions |  UpsellPlus Checkout Upsell |
|---|---|---|
| Detected stores | Not published | 106 |
| Net store change, 28 days | 0 | +15 |
| Stores added, 28 days | Not enough data | 17 |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Apparel & Accessories, Health & Beauty, Food, Beverages & Tobacco |
| Top store countries | Not published | United States, United Kingdom, Sweden |
Reviews
| Measure | Checkout Extensions | UpsellPlus Checkout Upsell |
|---|---|---|
| App Store rating | Not published | 5.0 ★ |
| App Store reviews | Not published | 151 |
| New reviews, 28 days | Not enough data | 6 |
| Reviewers a year or more in | Not enough data | 11% |
Pricing
| Measure | Checkout Extensions | UpsellPlus Checkout Upsell |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $9.99/month(ahead) | $49/month |
| Longest free trial | 14 days | 14 days |
| Plans listed | 4 | 4 |
Listing
| Measure | Checkout Extensions | UpsellPlus Checkout Upsell |
|---|---|---|
| Shopify category rank | #675 | #22 |
| Shopify App Charts | Not on this week’s charts | #11 in Checkout - Other |
| Built for Shopify | No | Yes |
| Launched | May 29, 2026 | Nov 3, 2021 |
| Languages | 1 | 1 |
| Developer | Boostora AI | UpsellPlus |
FAQ
Checkout Extensions and UpsellPlus Checkout Upsell: common questions
- Is Checkout Extensions or UpsellPlus Checkout Upsell cheaper?
- Both list a free plan. Paid plans start at $9.99/month for Checkout Extensions and $49/month for UpsellPlus Checkout Upsell. 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 Extensions lists 7 the others don’t mention, such as Attribution, Conditional logic, Customer satisfaction, Free shipping. UpsellPlus Checkout Upsell lists 17 the others don’t mention, such as A/B testing, AI recommendations, Announcement bar, Cart drawer. 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 2, 2026 for Checkout Extensions, Nov 8, 2026 for UpsellPlus Checkout Upsell; 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 2, 2026 for Checkout Extensions, Nov 8, 2026 for UpsellPlus Checkout Upsell. 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.