---
title: "CheckoutOS vs CartHook: post-purchase upsells compared"
description: "Compare CartHook and CheckoutOS: post-purchase funnels, per-order pricing and what each includes, checked October 16, 2026."
url: "https://chargezen.com/compare/carthook"
updated: "2026-10-16"
---

Canonical URL: https://chargezen.com/compare/carthook

# Post-purchase funnels, without per-order fees.

CartHook builds post-purchase and thank-you page upsell funnels, priced by orders. CheckoutOS includes those offers plus checkout blocks, bundles, rewards at checkout and checkout chat for $99 a month. $99/month. No per-order fees.

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 CartHook if you run high volume or Shopify Plus and want a dedicated post-purchase funnel builder with accept and decline paths. 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.** CartHook facts come from [the CartHook App Store listing](https://apps.shopify.com/post-purchase-offers-carthook). “Not listed” means those pages didn’t name the feature when we checked, not that CartHook can’t do it.

| Feature | CartHook | Chargezen |
| --- | --- | --- |
| Post-purchase upsells One-click offers after checkout | Included | Included |
| Thank you page offers Offers on the confirmation page | Included | Included |
| Checkout upsells Offers inside Shopify checkout | Shopify Plus | Included |
| A/B testing Test different offers | Included | Included |
| Offer a subscription Subscribe and save offers | With Recharge or Seal | With Chargezen Subscriptions |
| Bundles and cart rules Merge or split bundles before the order is placed | Through bundle apps | Included |
| Rewards at checkout Show points as customers buy | Not listed | Included |
| Checkout chat Answer questions during checkout | Not listed | Included |
| Per-order fees Charges on each order | On Pay as you go and Growth | None |

## What you’d really pay

CartHook charges by order on its smaller plans. CheckoutOS is one monthly price.

### CartHook

Pay as you go

20 orders free, then $0.12/order + 1% of upsell revenue

Growth

$49/mo, 1,000 orders, then $0.14/order

Scale

$149/mo

Checkout upsells

Shopify Plus

Estimated Annual Cost

From $588/year

Growth for 12 months before per-order charges (capped at $1,200). The Scale plan’s text lists both unlimited orders and a per-order charge above 3,000, so confirm it with CartHook. [CartHook App Store listing](https://apps.shopify.com/post-purchase-offers-carthook), checked October 16, 2026.

### Chargezen

CheckoutOS

$99/mo

Per-order fee

$0

Share of upsell revenue

$0

Order limits

None

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 CartHook

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 CartHook 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 CartHook
    
    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 CartHook?

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

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

## Common questions

### How much does CartHook cost compared with CheckoutOS?

CartHook’s Pay as you go plan is free for 20 orders, then $0.12 per order plus 1% of upsell revenue; Growth is $49/month for 1,000 orders, then $0.14 per order; Scale is $149/month (checked October 16, 2026). CheckoutOS is $99/month with no per-order fees.