---
title: "CheckoutOS vs Shopify Checkout Blocks: what each does"
description: "Compare Shopify’s free Checkout Blocks app and CheckoutOS: checkout content, rules, upsells, bundles and rewards, checked October 16, 2026."
url: "https://chargezen.com/compare/checkout-blocks"
updated: "2026-10-16"
---

Canonical URL: https://chargezen.com/compare/checkout-blocks

# Checkout blocks, plus the offers that sell.

Shopify’s free Checkout Blocks app adds content, fields and rules to checkout, mostly on Shopify Plus. CheckoutOS includes checkout blocks and cart rules, and adds upsells, bundles, rewards at checkout and checkout chat. More than layout. Offers that grow orders.

Self-serve software or help with setup and migration.

## Side by side

See exactly what you get with each one.

**Who each one is best for.** Choose Checkout Blocks if you are on Shopify Plus and want free, first-party checkout and thank-you page customization, with fields, rules and discounts, and don’t need upsells. Choose CheckoutOS if you want checkout offers, post-purchase upsells, bundles, checkout blocks and cart rules from one app for $99 a month, with no per-order fees.

**Checked October 16, 2026.** Checkout Blocks facts come from [the Checkout Blocks App Store listing](https://apps.shopify.com/checkout-blocks). “Not listed” means those pages didn’t name the feature when we checked, not that Checkout Blocks can’t do it.

| Feature | Checkout Blocks | Chargezen |
| --- | --- | --- |
| Thank you and order status blocks Content on the confirmation pages | Included | Included |
| Checkout content and fields Blocks and custom fields in checkout | Shopify Plus | Included |
| Delivery and payment rules Hide, rename or reorder methods | Shopify Plus | Cart rules and validations |
| Post-purchase upsells One-click offers after checkout | Not listed | Included |
| Cart upsells Offers in the cart | Not listed | Included |
| Bundles Merge or split bundles | Not listed | Included |
| A/B testing Test different offers | Not listed | Included |
| Rewards at checkout Show points as customers buy | Not listed | Included |
| Price Monthly cost | Free | $99/month |

## What you’d really pay

Checkout Blocks is free. CheckoutOS is $99 a month and adds upsells, bundles and rewards.

### Checkout Blocks

Checkout Blocks

Free

Most checkout features

Need Shopify Plus

Without Plus

Thank you and order status blocks, some rules

Upsells and bundles

Not listed

Estimated Annual Cost

$0/year

Free from Shopify. Full checkout content, custom fields, delivery and payment rules and custom discounts need Shopify Plus. [Checkout Blocks App Store listing](https://apps.shopify.com/checkout-blocks), checked October 16, 2026.

### Chargezen

CheckoutOS

$99/mo

Per-order fee

$0

Share of upsell revenue

$0

Annual Cost

$1,188/year

CheckoutOS is $99/month, billed monthly, with no per-order fees. Pre-orders are included. Taxes are extra. [Chargezen pricing](https://chargezen.com/pricing).

## Plan your move from Checkout Blocks

Check your data, billing dates and launch plan before you switch.

[Talk through your move](https://chargezen.com/contact-sales)

*   [See CheckoutOS](https://chargezen.com/checkoutos)

1.  01
    
    ### List your offers
    
    Write down the Checkout Blocks offers, bundles and rules that perform best today.
    
2.  02
    
    ### Rebuild them in CheckoutOS
    
    Create the same offers in the cart, checkout, post-purchase and thank-you page.
    
3.  03
    
    ### Test side by side
    
    Use A/B tests to compare results before you switch everything over.
    
4.  04
    
    ### Turn off Checkout Blocks
    
    Remove the old offers so customers only see one set.
    

## Why brands switch to Chargezen

### Unified Platform

Run AI agents, texts and email, upsells, creators and subscriptions from one place.

### AI-Powered

AI agents answer customers, follow up and handle everyday busywork for your team.

### Clear Pricing

See prices and usage costs, billed monthly or yearly.

## Ready to switch from Checkout Blocks?

See the products, prices and setup help that fit your brand.

[Get started](https://admin.chargezen.com/signup)

## Common questions

### Is Checkout Blocks free?

Yes. Shopify’s Checkout Blocks app is free, and most checkout features need Shopify Plus (checked October 16, 2026). CheckoutOS is $99/month and adds upsells, bundles, rewards at checkout and checkout chat.