CartBoost: Checkout Upsell vs Checkout Boost: Rules & Upsell
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 4, 2026 for CartBoost, Nov 5, 2026 for Checkout Boost.
The short answer
- Both list a free plan. Paid plans start at $9.99/month for CartBoost and $49/month for Checkout Boost.
- Checkout Boost lists 9 features CartBoost’s listing doesn’t mention, including AI recommendations, Bundles, Custom rules.
Head to head
- United States
- Australia
- United Kingdom
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Free
- · 1-Click checkout order bump
- · Checkout milestone progress bar
- · Native Checkout Extensibility
- · Standard email support
Pro
- · 1-Click post-purchase upsells
- · Multi-tier milestone rewards
- · Priority developer support
- · Unlimited checkout orders
Starter
- · All checkout pages
- · Compatible with Shopify Plus stores only
- · Delivery option: Hide, Rename, Reorder
- · Dev store access free
- · Payment method: Hide, Rename, Reorder
- · Unlimited static content blocks
Plus
- · All Starter features
- · BXGY & free gift automation
- · Checkout validation
- · Conditional content blocks
- · Post purchase & checkout upsell
- · Rule based discount codes
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureCartBoost helps merchants increase Average Order Value directly within Shopify checkout. Set dynamic milestone reward progress bars for free shipping and gift tiers that update live with cart totals. Offer high-converting 1-click checkout order bumps and post-purchase upsells with zero checkout friction. Built 100% natively on Checkout Extensibility with no theme code injection or slow scripts.
CheckoutBoost is the ultimate checkout customization app for upsells, post-purchase one-click offers, cross-sells & checkout blocks. Build checkout UI extensions with a no-code drag-and-drop editor powered by checkout extensibility. Apply 60+ smart conditions based on cart value, product tags, collections, customer segments & geography. Automate discounts code, BXGY deals & free gift rules.
- Checkout progress bar with tiered milestone rewards
- One-click order bumps placed directly inside native checkout
- Post-purchase 1-click upsells displayed right after payment
- Visual checkout customizer block with live admin simulator
- No-Code simple drag-and-drop checkout editor
- Global conditions engine for cart value, tags, customer attributes & more
- Build your own content checkout extension with text, banner, button and more
- Customizable upsell, form, content, and promotional checkout blocks
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 Boost | |
|---|---|---|
| Detected stores | Not published | 48 |
| 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, Food, Beverages & Tobacco, Sporting Goods |
| Top store countries | Not published | United States, Australia, United Kingdom |
Reviews
| Measure | Checkout Boost | |
|---|---|---|
| App Store rating | Not published | 5.0 ★ |
| App Store reviews | Not published | 10 |
| 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 Boost | |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $9.99/month(ahead) | $49/month |
| Longest free trial | 14 days | 30 days |
| Plans listed | 2 | 2 |
Listing
| Measure | Checkout Boost | |
|---|---|---|
| Shopify category rank | Not enough data | #102 |
| Shopify App Charts | Not on this week’s charts | #12 in Checkout - Other |
| Built for Shopify | No | Yes |
| Launched | Nov 4, 2026 | Apr 19, 2024 |
| Languages | 1 | 1 |
| Developer | ModApps | Checkout Boost |
FAQ
CartBoost and Checkout Boost: common questions
- Is CartBoost or Checkout Boost cheaper?
- Both list a free plan. Paid plans start at $9.99/month for CartBoost and $49/month for Checkout Boost. 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?
- CartBoost lists 3 the others don’t mention, such as Click-through rates, Conversion rates, Priority processing. Checkout Boost lists 9 the others don’t mention, such as AI recommendations, Bundles, Custom rules, Drag-and-drop editor. 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 4, 2026 for CartBoost, Nov 5, 2026 for Checkout Boost; 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 4, 2026 for CartBoost, Nov 5, 2026 for Checkout Boost. 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.