Must-Have Shopify Apps: What Operators Call Critical

The data behind this page: 1,679 reviews of 576 Shopify apps by verified operators, January 2024 to October 2026 · 49% call the app critical to doing their job · 91% still use it.

Ask one store owner which apps they can’t work without and you get a short, personal list. Ask 1,679 times across 576 apps and a pattern shows. Operators call their email and SMS app critical more often than anything else: 65% do. Support, operations and shipping tools come next.

Reviews apps tell a different story. They’re the best-loved category in our data, yet only 37% of operators call theirs critical. Below: the categories operators say they can’t run a store without, the apps they keep in each, what can wait, and the free Shopify apps they rely on. With Black Friday on November 27, it’s also a fair check on what your store depends on.

Quick answers: must-have Shopify apps

What apps does every Shopify store need? Going by what operators call critical to their job: email and SMS (65%), support and helpdesk (56%), inventory and operations tools (53%) and shipping (50%). Reviews apps earn the highest satisfaction, 79% very satisfied, but only 37% call them critical.

What is the most essential Shopify app? In our data, Klaviyo. It has 221 reviews, the most of any app, and 71% of those operators say they need it to do their job. 95% still use it. Price is the most common complaint.

Which Shopify apps can wait? Loyalty apps (30% call them critical), affiliate and influencer tools (33%, with the lowest keep rate in our data at 81%) and upsell and bundle apps (35%). Operators still keep most of them, but fewer depend on them.

Which free Shopify apps do operators keep? Shopify Flow: all 13 reviewers still use it and nine call it critical. All eight Translate & Adapt reviewers still use it too. Search & Discovery, Forms and Bundles cover basic needs, with limits operators describe below.

How many apps do operators call critical? About half. 49% of all reviews describe the app as critical to the reviewer’s work, and 95% of those operators still use it.

Which Shopify apps do operators call critical?

Read it two ways. “Call it critical” is how many operators say they need the app to do their job, and “very satisfied” is how happy they are with it. The two don’t line up. Reviews apps are among the most liked and least critical, while email and SMS is near the top on both. Returns (24 reviews) and SEO apps (21) are left out as samples too small to compare.

Why is email and SMS the top must-have?

Because it’s the channel operators run every day. Klaviyo dominates our data with 221 reviews: 71% call it critical, 95% still use it, 73% are very satisfied, and 131 of them are past the three-year mark.

“Can’t find a better email marketing tool” (Operator, verified ASR review)

The pressure point is cost, and it shows up in this year’s reviews. Several long-time users still rate it critical while calling it expensive:

“Has gotten too expensive.” (Owner, verified ASR review)

The other names are smaller samples, so read them as counts. 15 of 19 Omnisend reviewers call it critical and 18 still use it. Attentive, for SMS, is critical to 15 of its 24 reviewers, but only 19 still use it. Nine of 14 Mailchimp reviewers call it critical.

All four list a way in without a big bill. Klaviyo (4.7 from 3,434 App Store reviews) and Omnisend (4.7 from 3,204) both list free plans capped at 250 contacts, with 500 emails a month. Mailchimp (4.8 from 1,571) has a free plan, with Essentials from $13 a month. Attentive (4.7 from 112) is free to install with a 30-day trial, then billed directly.

If Klaviyo’s price is the problem, our Klaviyo alternatives guide covers where operators say they’d go, and email vs SMS covers which channel to fund first.

Which support app do operators keep?

Gorgias, by a distance. 39 of its 40 reviewers still use it, 22 call it critical and 25 are very satisfied. Operators praise its Shopify integrations and the time it saves agents:

“Helps decrease touch time for agents” (Owner, verified ASR review)

Tidio shows the other side of the category: six of its 10 reviewers call it critical, but only six still use it. Gorgias is rated 4.3 from 708 App Store reviews, with Starter costing $10 a month including 50 tickets, and Basic $60 including 300. For the wider field, see Gorgias alternatives and our live chat and helpdesk roundup.

Which operations apps do operators rely on?

The quiet ones. Matrixify, for bulk import and export, is still used by all 22 of its reviewers. 59% call it critical and 77% are very satisfied:

“Complete import/export control, even in areas where native Shopify doesn’t allow.” (E-commerce Manager, verified ASR review)

Shopify Flow, Shopify’s free automation app, is kept by all 13 of its reviewers, and nine call it critical. Operators use it to tag orders, connect apps and automate routine work:

“Without Flow, certain things would not have been possible otherwise.” (E-commerce Manager, verified ASR review)

Matrixify is rated 4.9 from 1,881 reviews, with a free demo plan and Basic from $20 a month. Flow is free and rated 4.7 from 15,402. Its reviewers’ main complaint is a learning curve on triggers and setup. Our guides to ERP and operations apps and inventory apps go further.

What about shipping and analytics?

Shipping has the single most critical app in our data. 13 of 14 ShipStation reviewers call it critical, the highest share of any app with 10 or more reviews, and 13 still use it. Some find it clunky for beginners, but the core job holds:

“The automatisation is really good and easy to work.” (Owner, verified ASR review)

ShipStation is rated 4.3 from 710 reviews, from $14.99 a month with a 30-day trial. Our shipping apps guide compares it with the alternatives.

Analytics is the category operators are most satisfied with after reviews. Triple Whale leads it: 17 of 19 reviewers still use it and 15 are very satisfied. On November 10, 2026, its App Store listing showed it as unavailable, so check how to install it before you plan around it.

“We have much more control on how we are spending money” (E-commerce Manager, verified ASR review)

Triple Whale alternatives and the best Shopify analytics apps cover the other options.

Are reviews apps a must-have?

Operators love them, keep them and mostly don’t call them critical. Across 201 reviews, 79% are very satisfied, the highest of any category, and 92% still use their reviews app, but only 37% say they need it to do their job.

Judge.me carries the category with 81 reviews: 86% very satisfied, 94% still using and 41% critical. Loox is close behind, with 25 of 26 reviewers very satisfied and 25 still using it.

“It just works with zero maintenance” (Owner, verified ASR review)

Several reviewers describe review collection running on autopilot once it’s set up. Judge.me is rated 5.0 from 49,884 reviews with a free plan and Awesome at $15 a month. Loox is 4.9 from 10,066, free on its Beginner plan and $49.99 a month on Convert. For the full comparison, read our ranking of Shopify review apps.

Which apps can wait?

The ones fewer operators depend on. Loyalty, affiliate, upsell and sales channel apps all sit below 40% critical, and affiliate tools have the lowest keep rate in our data. That doesn’t make them useless; it means operators add them on top of a working store rather than to run one.

Smile shows the loyalty pattern. Every one of its 30 reviewers still has it installed, but only 17% call it critical, and pricing comes up repeatedly:

“Can be expensive and some other small issues with features” (Owner, verified ASR review)

Shopify Collabs shows the affiliate one: only 2 of its 16 reviewers call it critical and four are very satisfied. One owner names the catch with inbound creators:

“Creators that have reached out do not have the best engagement scores” (Owner, verified ASR review)

Upsell sits in between. Rebuy has 21 reviews: nine call it critical and 19 still use it. Its App Store listing also showed it as unavailable on November 10. For these categories, start with our guides to loyalty apps, affiliate apps and upsell apps.

Which free Shopify apps should you turn on first?

Flow, from the operations section, is the strongest case in our data. Two more come up:

• Translate & Adapt. Every one of its eight reviewers keeps it, and five rate it critical. It’s free and rated 4.4 from 1,381 reviews. Some operators want AI translation and scheduled updates.

• Search & Discovery. Only three reviews in our data, and a 2.6 rating from 514 App Store reviews. One operator credits it with replacing a paid search app, and also finds it restrictive for large catalogs.

“For many stores it removes the need for another basic search app” (Operator, verified ASR review)

Shopify Bundles and Shopify Forms do the basics. Eight of nine Bundles reviewers still use it, though operators hit its option limits on complex products. Native tools also make some apps redundant. One marketer removed a metafields app during a cleanup for that reason:

“Shopify has since added its own metafield management in the admin” (Marketing, verified ASR review)

To get more out of Flow, shopexperts lists Shopify Flow experts who build automations.

What should you check before Black Friday?

Your critical apps, not your whole stack. Half of what operators review is critical to their job, and 95% of operators keep those apps. Operators also keep apps they aren’t happy with: 55% of those who are not satisfied still have the app installed.

• Know which apps are critical. Email, support, operations and shipping lead the table for a reason. Make sure flows, macros and automations in those apps are ready for peak.

• Note the ones you merely tolerate. Operators tend to keep a lukewarm app rather than swap it: neutral operators still use 86% of theirs. If a critical app is in that group, put its review on the calendar for after peak.

• Confirm what’s still listed. Two apps in this article showed as unavailable on the App Store this month. Check that your stack’s vendors are still installable and supported.

The Shopify app stack audit guide covers that review step by step, and the Shopify App Satisfaction Report has the full category data. For stacks built around a specific product type, see best Shopify apps by industry.

Run your store on these apps? The teams behind them want to hear which ones you can’t drop.

Operators in our network earn $100 to $250 a session telling app teams what a store depends on and why. Your must-have list, and the apps that didn’t make it, are what they’re asking about.

Join app store research as an operator →

Figures come from 1,679 reviews of 576 apps, all by verified operators, dated January 2024 to October 2026. Apps are grouped by what they do, and 290 reviews of apps outside these groups aren’t shown. Percentages for single apps appear only at 20 or more reviews; smaller samples are shown as counts.

Two reviews that don’t describe real use of the app are left out. We checked each App Store listing on November 10, 2026. Last reviewed: November 10, 2026.