cartx vs King Cart & Upsell
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026 for cartx, Nov 7, 2026 for King Cart & Upsell.
The short answer
- Paid plans start at $50/month for cartx and $5/month for King Cart & Upsell.
- King Cart & Upsell lists 18 features cartx’s listing doesn’t mention, including Announcements, Countdown timers, Custom CSS.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Basic
- · Automatic discounts at checkout
- · Free to test on development stores
- · On your own cart drawer
- · Up to 3 active offers
- · Volume & quantity discounts
Pro
- · Cart drawer
- · Discount codes
- · Drawer customizer
- · Free gift offers
- · Progress bar
- · Unlimited offers
Basic Plan
- · Basic customization
- · Discount codes
- · Notes
- · Simple cart configuration
Growth Plan
- · Countdown and announcements
- · Customizable design
- · Discount codes
- · High converting cart
- · Motivator bar for free shipping and disc
- · Notes
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featurecartx is a modern cart optimization app built for Shopify merchants who want a smoother and more engaging cart experience. Designed with simplicity in mind, cartx makes it easy to customize and manage your cart without complex setup or technical effort. Improve usability, create a seamless customer journey, and manage your cart experience with a merchant-friendly interface built for modern e-commerce brands.
King Cart is a full-featured slide-out cart builder that lets you set up and customize a seamless, on-brand cart experience in minutes. Shoppers get a clear, friction-free path to checkout, while you gain built-in tools to lift average order value and reduce abandonment—no coding or theme surgery required.
- Easy cart customization for Shopify stores without technical setup
- Create a smoother and more engaging customer cart experience
- Manage cart features with a simple and merchant-friendly interface
- Flexible cart tools designed to match your store’s branding
- Add targeted in-cart upsell and cross-sell blocks to boost AOV.
- Display a free-shipping or discount progress bar that nudges customers to add mo
- Publish announcements inside the cart to share brand news, promos, or delivery c
- Offer add-on checkboxes for shipping protection, gift wrap, donation, or any SKU
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 |  cartx |  King Cart & Upsell |
|---|---|---|
| Detected stores | Not published | 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 | Not published | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | cartx | King Cart & Upsell |
|---|---|---|
| App Store rating | Not published | 5.0 ★ |
| App Store reviews | Not published | 5 |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | cartx | King Cart & Upsell |
|---|---|---|
| Free plan | Not listed | Not listed |
| Lowest paid monthly plan | $50/month | $5/month(ahead) |
| Longest free trial | 7 days | 14 days |
| Plans listed | 2 | 2 |
Listing
| Measure | cartx | King Cart & Upsell |
|---|---|---|
| Shopify category rank | #475 | #204(ahead) |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | May 28, 2026 | Jun 16, 2025 |
| Languages | 1 | 1 |
| Developer | Devxconsultancy Private Limited | Conversions King LLC |
FAQ
cartx and King Cart & Upsell: common questions
- Is cartx or King Cart & Upsell cheaper?
- Paid plans start at $50/month for cartx and $5/month for King Cart & 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?
- cartx lists 4 the others don’t mention, such as Bulk discounts, Buy more, save more, Free gifts, Multi-language. King Cart & Upsell lists 18 the others don’t mention, such as Announcements, Countdown timers, Custom CSS, Custom HTML. 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 13, 2026 for cartx, Nov 7, 2026 for King Cart & 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 Oct 13, 2026 for cartx, Nov 7, 2026 for King Cart & 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.