CartBack: WhatsApp Chat Button vs Casa: Whatsapp Chat
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 16, 2026 for CartBack, Mar 9, 2026 for Casa.
The short answer
- CartBack lists 7 features Casa’s listing doesn’t mention, including Agent avatar, AI chatbots, Animations.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureCartBack adds a floating WhatsApp chat button to every page of your store. One tap opens a WhatsApp chat with your business number and a message you choose already typed in; on a computer it opens WhatsApp Web. It works with WhatsApp and WhatsApp Business numbers. Set your number, pre-filled message, greeting, position, and color in CartBack, with a live preview.
Casa: WhatsApp Chat helps merchants engage customers by adding a WhatsApp chat icon to their store. Customers can instantly start conversations, ask questions, and get real-time support directly on WhatsApp, improving response times and conversions.
- Add a floating WhatsApp button to your store in one click. No coding required.
- Customize the icon style,color, position,and welcome message to match your brand
- Control visibility by device (mobile/desktop) or hide on specific pages
- One-Click Chat – Customers start WhatsApp conversations instantly.
- Real-Time Support – Reply to queries directly on WhatsApp.
- Easy Setup – Add and customize the chat icon with no coding needed.
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 |  CartBack |  Casa |
|---|---|---|
| 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 | CartBack | Casa |
|---|---|---|
| App Store rating | 5.0 ★ | Not published |
| App Store reviews | 5 | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
FAQ
CartBack and Casa: common questions
- What features does each app list that the other doesn’t?
- CartBack lists 7 the others don’t mention, such as Agent avatar, AI chatbots, Animations, Auto-position. Casa lists 3 the others don’t mention, such as Custom pages, Size, Social media. 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 16, 2026 for CartBack, Mar 9, 2026 for Casa; 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 16, 2026 for CartBack, Mar 9, 2026 for Casa. 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.