10 Top Shopify Apps to Increase Sales: Free & Paid Apps for Every Store

Most Shopify stores do not have a traffic problem. They have a conversion problem.

The average Shopify store converts between 1 and 2 per cent of its visitors. That means for every 100 people who land on your store, 98 leave without buying. And of the ones who do add something to their cart, nearly 70 per cent abandon it before checkout. That is not a marketing failure. That is a systems failure, and the right apps fix it.

The Shopify App Store has over 8,000 apps. Most of them are not worth your time. A small number of them, in the right categories, will directly increase your revenue. This guide covers those categories, with free and paid picks in each, so you know exactly what to install and why.

Do Shopify Apps Actually Increase Sales?

Yes, but only when they solve a real problem in your store.

Apps do not create demand. They convert the demand you have already earned. An upsell app can absolutely increase your average order value once the right customers land on your store. The best apps work on three levers: conversion, AOV, and retention. A new customer can be 5 to 25 times more expensive to acquire than keeping an existing one happy. Which is why retention belongs in the same conversation as upsell and checkout apps.

The 10 categories below cover the full customer journey, from the moment someone lands on your store to the point where they become a long-term repeat buyer.

The 10 Best Shopify App Categories to Increase Sales

Use this table to spot the right category for your biggest drop-off point. Full details and app picks for each are in the sections below.

The 10 App Categories That Drive Real Revenue

Most merchants install apps reactively. A better approach is to map your full customer journey first, then choose tools that address the biggest drop-off points. Here are the 10 categories worth your attention, in the order they touch the customer journey.

1. Best Shopify Upsell and Cross-Sell Apps to Increase AOV

A customer who has already decided to buy is the easiest person to sell more to. The goal is to increase your average order value without increasing ad spend. A supplement brand selling a 30-day supply should suggest the 90-day bundle at checkout. A skincare store should cross-sell the moisturiser with every SPF purchase.

Free pick: Frequently Bought Together

One of the most installed upsell apps on Shopify. It automatically suggests related products based on purchase history and displays them as a bundle on the product page. Setup takes minutes, and it works out of the box without any configuration. For small and mid-sized stores that want cross-sell offers running quickly, it is the most practical starting point.

Paid pick: Bold Upsell

Built for stores that want more control over when and how upsell offers appear. Bold Upsell lets you set conditional logic so offers only show when they are relevant, trigger post-purchase upsells after the order is confirmed, and run one-click add-ons that do not interrupt the checkout flow. For scaling DTC brands where AOV is a key growth lever, the additional targeting and placement options pay for themselves quickly.

Track your average order value before and after installing either of these. If it does not move within 30 days, the issue is likely to offer relevance rather than the app itself.

2. Best Shopify Cart Abandonment Apps to Recover Lost Sales

The average cart abandonment rate across ecommerce sits at 70 per cent. That means 7 out of 10 shoppers who add something to their cart never complete the purchase. For a store doing 100 orders a month, fixing even a fraction of that is worth more than doubling your ad budget. The most common Shopify cart abandonment apps each address a different type of drop-off, from price hesitation to distraction mid-checkout.

Free pick: FaviCart Abandonment Protector

A lightweight app that re-engages shoppers through browser notifications when they leave items in their cart. It does not require email opt-in, which means it can reach anonymous visitors that email-based recovery cannot. For small stores that want abandonment recovery running without a complex setup, it is a solid free starting point.

Paid pick: Klaviyo

The industry standard for abandoned cart email and SMS flows on Shopify. Segment by abandonment reason, order value, and customer history, then send a timed sequence that feels personal. For brands doing meaningful volume, Klaviyo’s abandonment recovery alone typically covers the platform cost.

3. Best Shopify Checkout Optimization Apps to Stop Drop-Off

A customer who reaches checkout has already decided to buy. Your job is to get out of their way. Too many form fields, no trust signals, unexpected costs, each creates friction that kills the sale. The right Shopify checkout optimisation apps fix these without requiring any custom development.

Free pick: Checkout Blocks

Let’s you add custom content to your Shopify checkout without touching any code. You can add trust badges, security seals, testimonials, satisfaction guarantees, and product highlights directly on the checkout page. For stores that want to improve checkout conversion without a paid app, this is the most practical free option available.

Paid pick: Checkout Extensions Plus

Built for merchants who want full control over the checkout experience. It supports in-checkout upsells so you can increase order value at the final step, loyalty programme integration so customers can see and redeem points without leaving checkout, and branded customization that makes the experience feel consistent with the rest of your store. For Shopify Plus merchants running serious volume, the ability to test and optimize every element of checkout makes this worth the investment.

The single most impactful thing most stores can do at checkout is add visible trust signals. Shoppers are handing over their payment details to a brand they may have discovered an hour ago. A security badge, a money-back guarantee, and a clear returns policy displayed at the right moment can be the difference between a completed order and an abandoned one.

4. Best Shopify Buy Now Pay Later Apps for Higher Conversions

Price is the most common reason a shopper who wants your product does not buy it. A 120 dollar skincare kit as a single payment feels expensive. As four 30-dollar instalments, it feels manageable. BNPL only works as a conversion tool if shoppers see it before checkout, on product pages and in the cart.

Free pick: Shop Pay Instalments

Available at no additional cost for merchants already using Shopify Payments. It lets customers split purchases into four interest-free payments and integrates directly into the checkout flow without any third-party setup. For stores on Shopify Payments looking for an instant BNPL option with zero configuration, this is the obvious starting point.

Paid pick: Afterpay On-Site Messaging

Goes beyond checkout by displaying instalment options across your entire store, on product pages, in the cart, and at checkout. Customers see exactly what they will pay per instalment before they even add to the cart, which removes the price objection much earlier in the journey. For brands where product price is a known conversion barrier, showing Afterpay messaging throughout the shopping experience rather than only at checkout makes a measurable difference.

5. Best Shopify One-Click Checkout Apps to Reduce Friction

Every extra field a customer fills in is a reason to abandon. Returning customers especially expect speed. One-click checkout removes that friction almost entirely, and the conversion uplift compounds over time because every returning customer benefits on every subsequent order.

Free pick: Shop Pay

Shopify’s native accelerated checkout is the most recognised one-click option available to Shopify merchants. Customer details are stored securely across the Shopify network, which means a shopper who has used Shop Pay on any Shopify store can check out on yours in a single tap, even if they have never bought from you before. It is free for merchants on Shopify Payments and consistently outperforms guest checkout conversion rates.

Paid pick: Start to Finish

Creates direct-to-checkout links with products, discounts, and shipping details pre-filled. Where Shop Pay works best for returning customers checking out through your storefront, Start to Finish is particularly effective for traffic arriving from email campaigns, paid social ads, or influencer promotions, where purchase intent is already high. A customer clicking a link from an email and landing directly at a pre-filled checkout with their discount already applied has almost no friction left between them and a completed order.

6. Best Trust Badges for Shopify to Build Store Credibility

A first-time visitor has no reason to trust you yet. Trust signals, security badges, money-back guarantees, clear returns policies, close that gap. They work hardest at the product page and checkout, where hesitation is highest. For health, wellness, and supplement brands, visible credibility signals have a disproportionate impact on conversion.

Free pick: Conversion Bear Ultimate Trust Badges

A wide library of customisable badge designs covering security, payment methods, guarantees, and certifications. Lightweight with no meaningful impact on page speed, and simple to place anywhere on your storefront without developer help. For stores that want trust signals up and running quickly without additional cost, it covers everything most merchants need.

Paid pick: TrustedSite Trust Badges

Goes beyond design by providing verified security and business certifications that shoppers recognise from other sites they already trust. The paid plan includes site scanning and malware monitoring, so the certification is backed by actual verification rather than just a badge image. For brands where credibility is a known purchase barrier, a certification that shoppers can independently verify carries significantly more weight than a badge alone.

7. Best Shopify Review and UGC Apps for Social Proof

Shoppers trust other shoppers more than they trust brands. Reviews reduce purchase anxiety for new visitors and create a feedback loop about what customers actually value. A photo or video of a real customer using your product answers the question every prospective buyer is asking: Does this work for someone like me?

Free pick: Judge.me Product Reviews

One of the most widely installed review apps on Shopify, and genuinely one of the best free options available in any category. The free plan supports unlimited text, photo, and video reviews, automated review request emails, and customisable display widgets. For stores at any stage that want a robust review system without paying for it, Judge.me is the clear starting point.

Paid pick: Loox Product Reviews and Photos

Focuses specifically on photo and video reviews, which consistently generate higher conversion lift than text reviews alone because they show the product in real use rather than just describing it. Automated review request emails with photo prompts, referral incentives tied to review submission, and on-site display widgets that turn customer photos into a visual social proof gallery. For beauty, skincare, food, and lifestyle brands where seeing the product in context matters, Loox builds the kind of UGC library that functions as a permanent conversion asset.

8. Best Shopify Email Marketing Apps for Sales and Retention

Most stores use email as a broadcast tool. The stores that generate serious revenue from it treat it as a behavioural system. For subscription brands specifically, email is the primary channel for customer retention: pre-cancellation save offers, pause nudges, and winback sequences all live here.

Free pick: Shopify Email

Built into the Shopify admin. Up to 10,000 free emails per month with customisable templates, basic automation, and segmentation by purchase history. Handles the essentials for early-stage stores without additional cost.

Paid pick: Klaviyo

Flows that trigger based on customer behaviour, purchase history, and predicted lifetime value. A properly configured Klaviyo win-back flow alone can recover 10 to 15 per cent of lapsed customers, which, for most stores at meaningful volume, more than covers the platform cost.

9. Best Shopify Apps for Converting First-Time Visitors

The hardest conversion in ecommerce is the first one. The goal is not to pressure people into buying. It is to capture something from every visit so the relationship does not end when the tab closes. For DTC brands running paid social, where every visitor has a measurable acquisition cost, capturing an email or converting on the first visit is not optional.

Free pick: Privy

Covers the core use cases for first-visit conversion without any upfront cost. Popups, banners, and flyouts triggered by exit intent, time on page, or scroll depth, paired with email and SMS capture and a welcome discount offer. Simple to set up, integrates directly with Klaviyo and Shopify Email, and is effective for stores that want on-site conversion tools running quickly without a complex configuration. For early-stage stores growing their subscriber list, it handles the fundamentals well.

Paid pick: Optimonk

Built for stores that want granular control over personalisation and targeting. Offers adapt based on traffic source, device type, browsing behaviour, cart contents, and customer history, which means a visitor arriving from a Facebook ad sees a different message than one arriving from organic search. For brands running paid social at scale where the cost of acquiring each visitor is meaningful, the ability to show a precisely targeted offer to each segment rather than a generic pop-up to everyone significantly improves both conversion rate and list quality.

10. Best Shopify Subscription Apps to Build Predictable Revenue

Subscriptions change the entire economics of the business. A coffee brand with 500 subscribers each spending 30 dollars a month has 15,000 dollars in predictable recurring revenue every month before selling a single one-time order. The challenge is retention. The average ecommerce subscription sees around 5% monthly churn, which means without active retention efforts, a programme loses roughly half its subscriber base every year.

The incumbent: Recharge

The most widely used Shopify subscription platform. Handles recurring billing, customer portals, and payment failure recovery. Pricing starts at 299 dollars per month and can reach 499 dollars per month or more, which is steep for brands under 50,000 dollars MRR.

Also consider: Appstle Subscriptions

A more affordable alternative to Recharge with a solid feature set that covers recurring billing, flexible subscription intervals, customer portal management, and dunning for failed payments. For brands earlier in their subscription journey that want robust infrastructure without Recharge-level pricing, Appstle is worth evaluating seriously.

Understanding the patterns behind why subscribers drop off in the first 90 days is as important as choosing the right platform. Most subscription churn is not random. It follows predictable patterns that, once understood, can be addressed systematically before they become expensive.

How to Choose the Right Mix of Shopify Apps

More apps do not mean more sales. Every app you add loads JavaScript, creates a dependency, and adds operational overhead. Start by identifying your biggest drop-off point. Low conversion rate points to product pages or checkout. Low AOV points to the point of purchase. Low repeat purchase rate points to retention. Solve the biggest leak first.

Start with free apps, measure impact over 30 days, and upgrade to paid only when the free plan limits are genuinely costing you. Run a Shopify speed report after every new install, app scripts affect load time, and load time directly affects conversion rate.

The stores with the strongest unit economics pair conversion optimisation with retention infrastructure. Getting someone to buy once is the beginning. Building the systems that keep them coming back is where the real compounding happens.

Why Subscriptions Change the Economics of Your Store

Every category in this list improves a specific part of the customer journey. Subscriptions change the fundamental economics of the entire business. A subscriber is worth more per year than a one-time buyer, costs significantly less to retain, and generates revenue predictable enough to plan around. For DTC brands in consumable categories, building a subscription programme is the most straightforward path to a business that compounds rather than resets with every new acquisition cycle.

FAQs: Shopify Apps to Increase Sales

What are the best free Shopify apps to increase sales?

The most impactful free picks by category: Judge.me for reviews and social proof, Shopify Email for branded email up to 10,000 sends per month, Frequently Bought Together for product page cross-sells, Shop Pay for one-click checkout, and Checkout Blocks for trust signals at payment. Together, these cover conversion, trust, and retention without any upfront cost.

What is the best Shopify app for recovering abandoned carts?

Klaviyo is the industry standard for abandoned cart recovery on Shopify, it supports email and SMS flows, segmentation by cart value and abandonment reason, and timed sequences that feel personal rather than automated. For smaller stores not ready for Klaviyo’s pricing, FaviCart recovers anonymous visitors through browser notifications without requiring an email opt-in.

Can I grow with only free Shopify apps?

Yes, up to a point. Free apps handle the essentials well in early growth stages. The limits appear around advanced email segmentation, behavioural targeting, and detailed analytics. Most stores find that upgrading one or two tools, typically email marketing and either upsell or subscription, generates enough additional revenue to cover the cost many times over.

Do too many apps slow down a Shopify store?

Yes. Every app can inject scripts that increase page load time, and each extra second of load time directly reduces conversion rate. Run a Shopify speed report and Google PageSpeed test after every new install. Remove apps you’re not actively using; even uninstalled apps can leave behind script tags if not cleaned up properly.

When should I add subscription apps to my Shopify store?

When you sell a consumable product and have evidence that customers are already coming back to reorder. Coffee, supplements, skincare, pet food, and meal kits all have natural repurchase cadences that a subscription formalises. You don’t need a perfect store; you need enough repeat purchase data to know a subscription offer would make existing behaviour more convenient.

Ganesh Pawar

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Ganesh Pawar is the founder of Driftcharge, a subscription management app designed to help Shopify merchants streamline and scale their subscription businesses. With a deep focus on solving real-world pain points—like legacy account page support, flexible subscription options, and advanced analytics—Ganesh is passionate about building tools that drive growth and retention.