Commerce Inspector Blog

Data Spotlight

Top App Categories

There are hundreds of apps out there for your Ecomm store. But what are the “must-have apps” or the go-to choice for the biggest stores? We know that revenue can’t grow without the right tools, so we’ve pulled the top five categories of apps being used from Commerce Inspector’s data.


Reviews provide a way for your customers to engage with you, and provide social proof to drive and boost sales. The most popular reviews apps across all Shopify stores are Product Reviews and Loox Reviews.

Product Reviews


  • Theme-friendly design Reviews automatically match your store's look and feel
  • Easy customization — Edit layout options, text and colours without needing to code
  • Bulk actions - Publish, hide, filter, and manage reviews quickly and easily
  • CSV import and Export - Import and export your reviews as a spreadsheet
  • SEO-friendly review scores - Add review scores to your Google search results.

Pricing: Free

Loox Reviews


  • Offer reviewers a discount - Incentivize adding a photo to their review
  • Fully branded emails - Your name, logo, subject, and text
  • Customization - Define review request email timing, review form questions, widget colors, font, size and position
  • Inline SEO - Display product reviews & ratings on search results with Rich Snippets
  • The Loox Popup - Surface relevant product reviews while visitors browse

Pricing: 14 day trial, then $9.99/month

If you narrow down to the top Shopify sites by traffic, the most popular reviews apps are Product Reviews and Yotpo.  



  • [On-Site Display] Reviews Widget, Reviews Tab & Star Ratings - Increase conversion by showcasing product reviews and ratings across your homepage, product & category pages, and at checkout.
  • [Traffic & Social] Social Push & SEO Page - Drive traffic from Facebook and Twitter and rank higher in search results.
  • [Content Generation] Review Request Emails - Collect reviews with a single, frictionless request.
  • [Moderation & Commenting] Advanced Moderation & Commenting - Choose what to publish and where, and comment on reviews publicly or privately. And more!

Pricing: Free and Premium plans

Colour Pop Cosmetics (7M+ monthly views), Fashion Nova (24M+), and Spiffy (13M+) are among their users.

Email Marketing

Email marketing is a great way to build a relationship, interact, and promote sales with your customers. Klaviyo and Email Marketing by Omnisend are the top apps used among All Sites and Top Sites in Shopify.



  • Powerful Integrations—Klaviyo offers 100+ pre-built integrations ranging from shipping solutions to rewards programs. Top integrations include Facebook, ShipStation, Yotpo, Smile, Privy, and more.
  • Dynamic Forms and Personalization—Leverage Klaviyo’s free Form Builder to collect more information about your customers and grow your email list without any coding. Target forms to specific segments, devices, or pages and easily analyze results.
  •  Best-in-class segmentation—Target customers based on any event, profile, metric, and even location or date. Use segmentation to build important groups of customers like VIPs and engaged profiles.
  • Personalized Automation—Use the Flow Builder to automate messages across the entire customer journey and use pre-built templates to get started quickly. Optimize every message through A/B and split testing.
  • SMS—Send timely text messages to your customers that prefer receiving texts over email. Let Klaviyo manage compliance seamlessly and leverage a pay-as-you-go pricing to maximize ROI.

Pricing: Free up to 250 email contacts



  • Capitalize on pre-built automation workflows that you need to set up only once
  • Use robust segmentation - flexible customer segmentation including segments based on shopping and email campaign behavior.
  • Fully customizable signup forms, signup boxes, pop-ups wheel of fortune, landing pages
  • Combine email with SMS, add SMS to your email automation workflows or send SMS campaigns to increase your audience reach & engagement

Pricing: Free plan available

Colour Pop Cosmetics (7M+ monthly views), JB Hi-Fi (9M+), and Galorius (13M+) are among their users.


Most stores are designed for hit-and-run buyers. People find your store, view your products, and leave. Pop-ups are a great way to build your email, SMS, and Messenger lists. Privy and Mailmunch are the top apps used for this category among the biggest sites on Shopify. 



  • Customizable, mobile-friendly display types including email pop ups, spin to win wheel, banners, flyouts, announcement bars, & embedded forms for email collection
  • Single use, and bulk coupon code integration. Surface coupon codes in your popups, or in email or SMS autoresponders
  • Target campaigns based on exit, cart abandonment, cart value, scroll, timer, geography, device type, page, number of visits, number of orders, referral site, language & more
  • Run automated A/B split tests to understand how small changes impact conversion rates
  • Sync new contacts to more than 50 email marketing services like Mailchimp, Klaviyo, Bronto, Conversio & more

Pricing: Free for up to 5000 average monthly page views



  • Customizable, mobile friendly forms include popups, banners, bars, and embedded forms for email collection
  • Display campaigns based on exit, cart abandonment, scroll, timer, device type, page, number of visits, and more
  • Run giveaway campaigns and sales and offer your subscribers with discount coupon codes
  • Connect with all major email marketing providers including MailChimp, AWeber, Constant Contact, and more
  • Get analytics to find out which email popups are bringing in the most conversions

Pricing: Free plan available

Spiffy (13M+ monthly views), Katert JE (6M+) and Republic Wireless (1M+) are taking advantage of these list building apps.


Shopify of course, has built-in analytics for common queries like traffic and sales. But the best stores want more insights. Hotjar is the top app used for this category among All Sites and Top Sites in Shopify. 



  • Target visitors using URLs, device or custom javascript triggers, and User Attributes.
  • All our features track and work on Desktop, Mobile and Tablet versions of your website.
  • There are no limits to how many responses you can collect using our feedback tools.
  • Export responses you collect in CSV or XLSX format. Share Heatmaps or Recordings with your colleagues and clients.
  • Exclude tracking yourself, your team or your clients in Hotjar by blocking their IPs.

Pricing: Free plan available

Stores like Jeffree Star, I saw it first, and Windsor which all have 3M+ monthly views are using Hotjar.  

UX Apps

The top apps among all Shopify sites in this category are Frequently bought together - Upsell and ShopPop. Suggest additional products on your site and increases sale urgency by showing recent sale notifications in real-time.

Frequently bought together - Upsell


  • The styles are automatically tuned for the most popular Shopify themes. We also check your installation manually to ensure everything blends smoothly into your theme
  • Show ratings from the most popular review apps, including Shopify Product Reviews, Yotpo, Stamped (,, Loox and AliReviews (AliExpress Reviews)
  • Automatic recommendations: our AI algorithm has been trained with more and 1 billion orders and used by 125,000+ Shopify stores, producing the highest conversion rates
  • Show random products when there is not enough data for automatic recommendations. They can be filtered by collection, product type or product vendor to display similar products
  • You can apply an automatic discount to the bundles, effectively using the app as a discount upselling widget. Percentage discount codes (coupons) are created automatically.

Pricing: 30 day trial, $7.99/month



  • Sing our in-depth analytics dashboard, you can see insights on clicks, views, recent Pop events and more. Use this information to optimize your Pops for even better results!
  • With the Sales Pop Open API, you can create a custom app solutions to integrate with Sales Pop for your store. Sales Pop also integrates with Consistent Cart and WooHoo.
  • All CartKit Apps, including Sales Pop, update automatically, so you always have access to the newest version.

Pricing: Free plan available

Among Top Shopify Sites, Back in Stock and Instant Search are the most popular. Drive sales by sending back in stock email alerts and finds products with advanced search options and suggestions.

Back Instock


  • Create custom experiences with your own button or use our flexible JavaScript API.
  • Edit the email template with Liquid - just like Shopify.
  • Measure demand to assist your forecasting with our in-stock alerts App.
  • MailChimp, Klaviyo, Shoelace retargeting, Constant Contact, Campaign Monitor

Pricing: Free plan available

Instant Search


  • Personalized search suggestions, search autocomplete
  • Search through products, collections, and content pages, including blog posts.
  • Search by metafields
  • Live price, in-stock status, and product previews
  • “Did you mean” suggestions if nothing is found, Keyword-based redirects, Synonyms

Pricing: Free plan available

Fashion Nova (24M+ monthly views), I Saw it First (3M+  )views and Morphe (3M+) are all using these apps.


Want more insights about what stores are using what apps? Jump into Commerce Inspector and start exploring.