The best Shopify sticky add to cart apps solve a problem most merchants don't realize they have: half of your product page visitors scroll past the buy button and never scroll back up. On mobile, where product pages stretch five or six screen-lengths with images, reviews, and descriptions, the Add to Cart button disappears fast. That scroll is where you lose conversions you never even notice.
A sticky add to cart app keeps the buy button visible as shoppers scroll. Stores using sticky ATC bars typically see 8-15% higher add-to-cart rates, with mobile-heavy stores seeing even larger gains. If 60% of your traffic is mobile (and for most Shopify stores, it is), this is one of the highest-ROI changes you can make without touching your ads or pricing.
Here are the seven best sticky add to cart apps on Shopify in 2026, ranked by features, reliability, and real merchant feedback.
STKY: Best Overall Sticky Add to Cart App
Rating: 4.9 stars (472 reviews) | Pricing: Free plan available, paid plans available
STKY is the most polished option in this category. It combines a sticky add-to-cart bar with quick buy buttons and a slide cart drawer with upsells, so you're getting more than just a floating button.
What sets it apart is the attention to detail. You get seasonal animations, full custom CSS control, and a design that looks native to most themes without any tweaking. Merchants consistently praise the support team for handling customization requests quickly, which matters when you need the bar to match your brand exactly.
If you want one app to handle sticky ATC, quick buy, and cart drawer upsells together, STKY is the strongest pick.
EA Sticky Add to Cart Drawer: Best Free Option
Rating: 4.9 stars (155 reviews) | Pricing: Free plan with core features, paid plans for advanced features
EA Sticky Add to Cart gives you a working sticky bar, variant selector, quick buy button, and mobile optimization on the free plan. That's more than most paid apps offer at their entry tier.
The paid plans add social proof elements (review stars, live visitor counts), quantity selectors, and analytics. But the free plan covers the essentials. If you're testing whether a sticky ATC button lifts your conversions before committing to a monthly fee, EA is the app to start with.
One thing to note: EA also includes a slide cart drawer, which overlaps with STKY's feature set. If you already have a cart drawer app, you might not need both features.
Ultimate Sticky Add to Cart: Best for Simplicity
Rating: 4.6 stars (386 reviews) | Pricing: Free plan available
Ultimate Sticky Add to Cart does one thing and does it well: a floating Add to Cart button on every product page, regardless of screen size. No cart drawer, no upsells, no complex configuration.
It includes a countdown timer for urgency and Facebook pixel tracking, which is useful if you're running paid campaigns and want to track ATC events from the sticky bar specifically. The customization covers colors, shapes, and animations.
Merchants who want a lightweight, focused solution without feature bloat tend to prefer this one. The 4.6 rating is slightly lower than competitors, and some reviews mention occasional theme conflicts, so test it on your theme before going live.
Uplinkly Sticky Cart: Best Budget Paid Option
Rating: 4.7 stars (207 reviews) | Pricing: Free plan + $9/month paid plan
Uplinkly's paid plan is $9/month, making it one of the cheapest paid sticky cart apps. The free plan covers basic sticky cart functions, and the paid plan adds a countdown timer and additional customization.
The app works across mobile and desktop without coding. Merchants praise the setup process, which takes a few minutes. The 95.65% positive review rate speaks to consistent reliability.
One caveat: a few reviews mention confusion about the free plan limitations versus the trial period. Check what's included on the free tier before relying on it long-term.
SEOWILL (Formerly SEOAnt): Best for Urgency Tactics
Pricing: Free plan available
SEOWILL gives you two layout options: a mini shopping cart or a floating sticky cart. Both include the core sticky ATC function, but SEOWILL adds customizable countdown timers and stock scarcity messages directly in the sticky bar.
If your conversion strategy relies on urgency (limited-time offers, low-stock alerts), SEOWILL bakes those elements into the sticky bar itself instead of requiring a separate urgency app. The app is lightweight, uses CDN caching, and removes all code cleanly on uninstall.
Merchants using heatmap tools report that customers actively interact with the sticky bar, especially on product pages with long descriptions or heavy review sections.
CartFlow: Best for Quick Buy on Collection Pages
Pricing: Free plan available
Most sticky ATC apps only work on product pages. CartFlow extends quick buy buttons to your home page, collection pages, and recommendation widgets. Customers can add items to cart without visiting the product page at all.
The sticky ATC bar itself includes automatic variant selectors, so shoppers can pick size or color from the bar without scrolling back up. Merchants highlight the responsive support team and report noticeable increases in add-to-cart activity after installation.
If your store has a strong collection page browsing pattern (common for fashion and accessories), CartFlow's cross-page quick buy is a real differentiator.
Sticky Add To Cart Bar Pro: Best for Multi-Store Merchants
Pricing: Paid plans, billed monthly
Sticky Add To Cart Bar Pro has a smart trigger: instead of showing the bar immediately, it detects when the customer starts scrolling up (indicating intent to find the ATC button) and appears at that moment. This avoids the "bar showing before the customer even reads the product" issue that some merchants dislike.
The app supports multiple stores, currencies, and languages automatically, with CDN-based performance and Google Analytics integration. For merchants running several Shopify stores across different markets, the multi-store support saves setup time.
Support is responsive even during holidays, according to merchant reviews. The smart scroll detection behavior is unique to this app and worth testing if you find always-visible bars too aggressive for your brand.
Which Sticky Add to Cart App Should You Pick?
All seven apps solve the same core problem: keeping the buy button visible. The differences come down to what else you need:
- Lightweight sticky bar only: Ultimate Sticky Add to Cart or Uplinkly
- Sticky bar + cart drawer + upsells: STKY or EA Sticky Add to Cart
- Urgency timers built into the bar: SEOWILL
- Quick buy on collection pages: CartFlow
- Multi-store with smart scroll trigger: Sticky Add To Cart Bar Pro
- Best free option to test first: EA Sticky Add to Cart
A sticky add to cart app pairs well with other cart page optimizations and slide cart drawer apps to create a complete add-to-cart experience. If you're also looking to improve your product page above-the-fold layout, start there — the sticky bar catches what the layout misses.
Before installing any app, check one thing: does your current theme already include a sticky ATC feature? Several Shopify themes released in 2025-2026 have built-in sticky buttons. Go to your product page on mobile, scroll down, and see if a buy button follows you. If it does, you might not need an app at all.
If it doesn't, start with a free plan from EA or Ultimate, measure your add-to-cart rate for two weeks, and compare it to your baseline. The data will tell you whether to upgrade or switch apps.