Smart Carts vs Square: Sticky Add to Cart Bar
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 Smart Carts, Nov 1, 2026 for Square.
The short answer
- On the Shopify App Store: Smart Carts 3.7 from 3 reviews and Square 5.0 from 139 reviews.
- Only Smart Carts lists a free plan.
- Square lists 4 features Smart Carts’s listing doesn’t mention, including Custom styles, Mobile responsive, One-click upsell.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
FREE
- · 25 Monthly Carts
- · Editable Carts
- · Fully Customizable Emails
- · Item Reservation
- · Viewable Carts
STARTER
- · 500 Monthly Carts
- · Editable Carts
- · Fully Customizable Emails
- · Item Reservation
- · Quality Support
- · Viewable Carts
GROWTH
- · 1,000 Monthly Carts
- · Editable Carts
- · Fully Customizable Emails
- · Item Reservation
- · Quality Support
- · Viewable Carts
PRO
- · 3,000 Monthly Carts
- · Editable Carts
- · Fully Customizable Emails
- · Item Reservation
- · Priority Support
- · Viewable Carts
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureSmart Carts helps boost conversion rates by allowing you to interact with your customers’ carts live. Add urgency by reserving items for customers for a limited time, remind them with automated cart emails, and add items directly to their cart. Track everything with detailed analytics. Improve your customer experience with real-time cart updates, cross-device syncing, and fully customizable email reminders.
Increase conversions by keeping the Add to Cart bar visible while shoppers scroll. Square Sticky Add to Cart Bar helps customers buy faster, reduces cart abandonment, and improves the mobile shopping experience. Fully customizable to match your store’s design, it works on mobile and desktop, and the setup takes 1 minute. Clicks, orders, and revenue can be tracked with built-in analytics.
- Create, view, and edit your customers carts
- Syncs carts across all their devices
- Item reservation, creating a sense of urgency
- Fully customizable email reminders
- Reduce abandonment: Keep Add to Cart always in view for easy purchase access.
- Seamless design: Mimics your store’s style for a consistent experience.
- Fully customizable: Adjust colors, size, and position to fit your store's look.
- Analytics: Monitor clicks, CTR, orders, and revenue growth directly in-app.
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 |  Smart Carts |  Square |
|---|---|---|
| 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 | Smart Carts | Square |
|---|---|---|
| App Store rating | 3.7 ★ | 5.0 ★(ahead) |
| App Store reviews | 3 | 139(ahead) |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | 1% |
Pricing
| Measure | Smart Carts | Square |
|---|---|---|
| Free plan | Yes | Not listed |
| Lowest paid monthly plan | $30/month | No monthly plan listed |
| Longest free trial | 30 days | Not listed |
| Plans listed | 4 | Not published |
Listing
| Measure | Smart Carts | Square |
|---|---|---|
| Shopify category rank | Not enough data | #14 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | Yes |
| Launched | Jul 14, 2023 | Mar 22, 2024 |
| Languages | 1 | 14 |
| Developer | Simplify Apps | Square Apps |
FAQ
Smart Carts and Square: common questions
- Is Smart Carts or Square cheaper?
- Only Smart Carts lists a free plan. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- Which has better reviews, Smart Carts or Square?
- On the Shopify App Store: Smart Carts 3.7 from 3 reviews and Square 5.0 from 139 reviews.
- What features does each app list that the other doesn’t?
- Square lists 4 the others don’t mention, such as Custom styles, Mobile responsive, One-click upsell, Sticky cart. 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 Smart Carts, Nov 1, 2026 for Square; 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 Smart Carts, Nov 1, 2026 for Square. 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.