18 Best Shopify Apps to Increase Sales in 2021

18 Best Shopify Apps to Increase Sales in 2021

Content Writer


Are you planning to launch a new Shopify store or running a store already and need some best Shopify apps of 2021 to boost sales of your store? As Shopify gives you thousands of apps in the Shopify app store, you have a lot of choices but choosing the right one is the real challenge, right? So for you, here are we have listed the top 18 best apps in 2021 that every store owner must use on their store to increase sales.


Best Shopify Email Marketing Apps

Privy ‑ Pop Ups, Email, & SMS

If you are planning to start email marketing to promote your Shopify store then Privy is the best Shopify app that can help you to build your subscriber list. Privy is trusted by small and large eCommerce businesses to improve website conversion, grow their email list, and drive more sales.
Features of Privy

  • Grow Your Email List With Robust Targeting Capabilities
  • Improve Your Conversion Rate With Campaign Triggers
  • Increase Your Average Order Value
  • Measure Results With Real-Time
  • Automate Your Email Marketing
  • Text (SMS) Marketing


Omnisend Email Marketing

Omnisend is an email & SMS marketing platform for Shopify merchants who want to increase sales, not the workload. Full Shopify integration, pre-built automation workflows, and intuitive, no-code editing make it easy to get up & running without diving into the smallest details – unless you want to.
Features of Ominsend

  • Drive sales on autopilot with ecommerce automation
  • Send newsletters and targeted campaigns
  • Improve your targeting with robust segmentation
  • Combine email with SMS and more channels
  • Build your email & SMS lists



Klaviyo is the leading ecommerce marketing platform in the Shopify ecosystem. Over 50,000 stores around the world use Klaviyo to send personalized email, SMS messages, signup forms and more.
Features of Klaviyo

  • Powerful pre-built integrations
  • Free and flexible account options
  • Pre-built forms, templates, and automation
  • Personalization and targeting
  • Out-of-the-box automation
  • Dynamic forms
  • Best-in-class segmentation
  • Growth-focused reporting
  • SMS
  • Social advertising


Best Shopify Referral Apps

Referral Candy

ReferralCandy is a dedicated referral app for fast-growing Shopify and Shopify Plus brands. Million-dollar DTC brands use ReferralCandy to automate their refer a friend program, get new customers, and avoid referral fraud.
Features of Referral Candy

  • Track sales and identify top referrers on our Dashboard
  • Use Fraud Centre to review and block suspicious transactions
  • Automatic rewards payout – no fussy customer loyalty points, we send the rewards to customers directly
  • No limits on advocates or redemptions. You grow, we grow.


Smile: Rewards & Loyalty

Smile.io is better known for their loyalty and VIP programs. Smile.io allows you to quickly set up and run your own rewards program.
Rewarding your customers is important – a rewarded customer is more loyal, more likely to return, and of course, more likely to make repeat purchases – which is what you want.
Types of program

  • Loyalty points program
  • Referral program
  • VIP programs


Loyalty, Rewards & Referrals by Booster Apps

Delight your customers by offering rewards based on how many points a customer has earned. The app will set up and display a loyalty program widget on your store that handles all of this automatically.
Features of Loyalty, Rewards & Referrals

  • Increase Repeat Sales -Loyalty
  • Rewards and Loyalty Program
  • Increase Traffic w/ Referrals


Shopify apps for upsells and cross-sells

iCart Cart Drawer Cart Upsell

iCart is an all in one app for side cart customization and conversion optimization. iCart helps you in designing your cart drawer and generate sales by showing upsells, product recommendations with time-sensitive offers, gift wraps, countdown timer, discounts, and many more. No need for coding knowledge is required in using iCart. iCart is developed in a way that anyone from a non-technical background can use this app.
Key features

  • In cart Upsell
  • Product recommendations (cross-sell)
  • Custom HTML
  • Sticky add to cart & cart bubble – Side cart
  • Order addons – Giftwrap (Gift wrap) / warranty / custom
  • Cart countdown – urgency timer – persistent cart
  • Side cart


Bold Upsell ‑ True upsells!

This app helps you to Upsell customers from a single product to a product bundle or kit and cross-sell complementary products that are added to your customer’s cart. Offer and replace customers items with an upgraded version of their product with Bold Upsell.


Frequently Bought Together

Frequently Bought Together (FBT) app analyzes your store’s historical data and displays related product bundles in the widget on your product page. With Frequently Bought Together, your customers can buy related products with one single click, increasing the order value and your revenue. You can trust recommended products for their algorithms, or you can pick them manually.


Best Shopify SEO Apps

Bulk Image Edit ‑ Image SEO

Images that are large in file size, not tagged with proper keywords, and not user-friendly can wreak havoc on your SEO rankings. That’s where Bulk Image Edit comes in. Bulk Image Edit can DRAMATICALLY reduce the image file sizes by a single click without losing any visible image quality – up to 51% in some instances. This is a must-do even before the launch of your store.

  • Bulk update image alt text and file name with customizable templates to represent your store name, product name, product type, etc
  • Set and forget, automatically update all newly added images with the defined Alt text and file name templates
  • Minimize Product or Theme Asset image file sizes without image quality loss
  • Resize all product images to square shape, the most popular image shape, to standardize images on your website and on social networks such as Facebook or Instagram
  • Resize/crop/Frame/Trim product images so that all your product images are same in width or height
  • Add text or image based watermarks to protect your product images from being stolen by competitors
  • Preview the products that will be edited before creating a task
  • Review the images that have been edited with our well-structured logs
  • Option to revert/undo any changes that have been made


PageFly Landing Page Builder

With PageFly you can build high-converting pages with less effort. PageFly will help you build professional sites that’s been completely optimized to sell more of your products and looks incredible on mobile & desktop.
Full control over the design and display your products on any page type:

  • Sales landing pages
  • “Coming soon” pages
  • Product pages
  • Pricing pages
  • Collection pages
  • Delivery/returns pages
  • About us pages
  • Contact us pages
  • FAQ pages
  • Blog pages
  • And more…


Booster: Page Speed Optimizer

This app can instantly improve the page load times for your store in just one click. It increases the chances of conversion by having a site that loads quicker!

  • One-Click page speed improvement
  • No coding
  • Instantly turn on or off
  • Nice and Simple!


Best Shopify Marketing Apps

Loyalty, Wishlist, Reviews UGC by Growave

Growave is the all-in-one marketing platform that empowers your Shopify store with product reviews, wishlists, loyalty programs, referrals, social login, and UGC. With Growave, you can increase sales, retain customers, and grow your loyal customer base. Loyalty and Rewards program can help you launch referral campaigns to increase traffic to your website and engage your current customers. With Growave you can grow traffic, engage customers, sell more, and many more.

PushOwl Web Push Notification

PushOwl reaches your subscribers with an automatic sequence of push notifications that brings them automatically back to their cart. This can help you increase sales and re-engage visitors to your site who have left.

  • It sends tailored campaigns and reminders for abandoned carts
  • Updates you with back-in-stock notifications for boosting sales
  • Sends review notifications once the product is shipped


Facebook Messenger Marketing

Facebook Messenger Marketing allows you to communicate with your customers via a whole new channel – Facebook Messenger. Order receipts, shipping notifications, promotional messages, abandoned cart messages – they all can be sent directly to your customers.

  • No coding needed!
  • Customize the Facebook Messenger notifications that are sent out!
  • FREE!


Best Shopify Review Apps

Reputon Customer Reviews App

If you want to get an instant boost to your social proof on your Shopify store then the Reputon Customer Reviews app is the right choice for you. Reputon Customer Reviews app will help you to improve your store ratings, trust score, SEO and reputation by working with your happy customers.



Yotpo is the best app that helps you to build social proof, online reputation, drive traffic and increase conversion on the Shopify store.
What can you do with Yotpo?

  • Collect reviews, ratings, photos, and Q&A from customers
  • Increase conversion by showcasing customer content onsite
  • Leverage our official partnership with Google to boost brand discovery & increase traffic from search
  • Share your best customer content on Facebook & Instagram
  • Build a powerful brand community
  • Make better business decisions using analytics & customer feedback.


Loox Product Reviews Referrals

Loox is a fully-featured product review app that enables small and large brands to automatically collect customer reviews with photos and beautifully display happy customer content. Loox verified reviews and photo reviews are your greatest assets for increasing brand awareness and improving conversion rates.

Ali Reviews – Product Reviews

Ali Reviews empowers 40,000 + Shopify stores (varies from dropshipping, print on demand… to e-commerce) to build social proof and maximize conversion rates by displaying reviews throughout the buyer’s journey. With AliExpress product reviews you can gain customer trust & skyrocket dropshipping sales.


BONUS: Shopify Mobile App Builder

Shopney ‑ Mobile App Builder

80% of eCommerce store traffic is on mobile. Therefore, making your Shopify store mobile-friendly is equally important to ensure the best shopping experience for mobile shoppers. The Shopney app helps you bring your brand to mobile with a few clicks. You can easily connect your Shopify store with this Shopify mobile app builder and take your business to the next level together with a world-class mobile app!

Main Features

  • An easy drag & drop editor to build your mobile app
  • Different layout options for different store types
  • Limitless push notifications
  • In-app live chat feature that you can even convert your visitors to clients in real-time.
  • Incredible 7/24, multilingual customer support which guarantees a smooth onboarding and launch process


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