RapidCart 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 RapidCart, Nov 1, 2026 for Square.
The short answer
- Only RapidCart lists a free plan.
- Square lists 4 features RapidCart’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.
Starter(Free)
- · 200 clicks/month across all features
- · Fully Automatic 1-Click Install
- · Fully Mobile and Desktop Responsive
- · Quick Buy Button
- · Standard email support
- · Sticky Add to Cart Bar
Growth
- · 2,000 clicks/month
- · Analytics dashboard
- · Custom colors, layout & animations
- · Everything in Starter
- · Fully Automatic 1-Click Install
- · Priority email support
Power
- · Countdown timers for urgency
- · Custom CSS capabilities
- · Everything in Growth plan
- · Paid customization available
- · Premium priority support (live chat)
- · Unlimited clicks
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureEnhance functionality and boosts sales by adding essential sales features. Reduces the steps required for customers to make a purchase, leading to faster transactions and increased conversion rates. Streamlining the purchasing process and increasing conversion rates. Adds sticky add to cart and checkout bars, enhancing user experience & reducing cart abandonment.
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.
- Sticky Add to Cart Bar: A floating bar on product page to quickly add to cart
- Sticky Cart: Cart remains visible for shopper to view & edit items in cart
- Quick Buy Button: Floating Buy Now button on Product Image in Catalog Page.
- Sticky Checkout Bar: Floating Bar for faster checkout & reduce abandoned cart
- 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 |  RapidCart |  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 | RapidCart | Square |
|---|---|---|
| App Store rating | Not published | 5.0 ★ |
| App Store reviews | Not published | 139 |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | 1% |
FAQ
RapidCart and Square: common questions
- Is RapidCart or Square cheaper?
- Only RapidCart 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.
- 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 RapidCart, 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 RapidCart, 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.