The best Shopify apps to increase sales in 2026, by category

The best Shopify apps to increase sales are the ones that fix a job your store is failing right now: reviews you do not have, an email list you do not capture, a search box that returns nothing, images that crawl on mobile. The trap is treating "more apps" as the strategy.

We audited 1,000+ live Shopify stores in 2026, and the full data set is here. One pattern was hard to miss: 57% already ran the Meta pixel and 47% already ran Klaviyo, yet 93% still had at least one visible conversion leak. Adding tools had not closed the gap. The right five, placed well, would have.

So this is a cross-category list, not a pile of thirty apps. Seven jobs that actually move revenue, each with one honest pick and one budget or free option, every rating and price pulled from the Shopify App Store or the vendor's site in July 2026. Where the honest answer is "use a built-in tool" or "read the deep-dive," we say that instead of padding the list.

Most stores need the right five apps, not more

TL;DR Adding apps rarely fixes conversion; a focused stack plus a few placement fixes does, and every extra app you install has a speed cost.

The single most useful thing our audit taught us: stores do not lose sales because they are missing the twenty-fifth app. They lose sales in a handful of predictable places, and most of those places are free to fix.

In the 1,000+ stores we looked at in 2026 (full breakdown), 65% buried Add to Cart below the fold on mobile, 31% put nothing reassuring near the buy button, and 60% ran no free-shipping threshold. None of those are app problems. Moving the buy button up is a theme edit, covered in this playbook. Every one of them beats installing something new.

There is also a direct cost to piling on apps. In the same audit, 37% of stores served a slow, heavy homepage on mobile, and app scripts are a frequent culprit. A Google-commissioned Deloitte study of 37 brand sites found that a 0.1-second mobile speed improvement lifted retail conversions 8.4% and average order value 9.2%. So the goal below is a short stack: the five apps that each earn their place, with the honest note on where a built-in fix beats a paid one. The wider method sits in our Shopify CRO playbook, and the numbers behind it in the 2026 benchmarks.

Reviews and social proof

TL;DR Reviews are the highest-return cheap fix, and 45% of audited stores run none. Judge.me is free and excellent; Loox is the pick for photo and video reviews.

If a store is going to add one app, this is usually it. In our audit, 45% of stores ran no review app at all (the reviews data is here), which means nearly half were asking shoppers to trust a claim with nothing to back it up.

The honest pick, Judge.me. It has a genuinely free forever plan with unlimited reviews, and its listing shows 5.0 stars across 41,318 reviews (Shopify App Store, July 2026), the largest review base in the category. The cheapest paid tier, Awesome, is $15/mo (verify live). It is Built for Shopify, fast to install, and hard to argue with at that price.

The premium pick, Loox. When photo and video reviews are the whole point, Loox is built for it, at 4.9 stars across 8,209 reviews with a free plan and a paid Convert tier at $49.99/mo (Shopify App Store, July 2026). Pay up here only if visual, user-generated proof is central to how you sell. Wherever your reviews land, place them and your trust signals near the buy decision, not buried at the page bottom: see the social proof pillar and trust badges near the buy button.

Honest pick: Judge.me (free, 5.0 stars / 41,318 reviews; paid from $15/mo). Premium pick: Loox for photo and video (4.9 / 8,209; paid from $49.99/mo). Skip if: you already collect reviews and show them near the buy button.

Upsell and average order value

TL;DR Raise order value with a free-shipping threshold and simple bundles before you pay for an upsell app; 60% of audited stores have no threshold at all.

Average order value is where a lot of stores reach for a paid upsell app first, when the cheapest lever is sitting unused. In our 2026 audit, 60% of stores had no free-shipping threshold or nudge (source), which is one of the most reliable ways to push carts higher.

Start free. Set the threshold with our free-shipping threshold calculator so the number protects your margin instead of guessing, then work through bundles, post-purchase offers, and cross-sells in the AOV pillar and the bundles playbook. Only after those earn their keep does a dedicated upsell app make sense, and the current shortlist with real ratings and prices lives in our Shopify upsell apps guide rather than a name we cannot verify here.

Honest pick: a free-shipping threshold and native bundles first (free). Next step: a vetted upsell app, compared in the upsell apps guide. Skip if: your threshold is set and your product pages already suggest add-ons.

Email and retention

TL;DR Email is where repeat sales come from, and Klaviyo is free up to 250 profiles. 47% of audited stores already run it.

New-customer acquisition gets expensive; email is how you sell to the people who already bought. Klaviyo is the default here, and it had real adoption in our sample: 47% of audited stores ran it (source).

The pick, Klaviyo. It is free up to 250 active profiles and 500 email sends per month, which is enough to stand up your first flows at no cost. Paid email starts around $20/mo at 500 contacts and scales by profile count (klaviyo.com, verify live). The honest caveat: email only pays once you are actually capturing subscribers and segmenting them, so build the welcome, abandoned-cart, and post-purchase flows before you judge the bill. A store sending one newsletter a month will not see the return that a store running triggered flows does.

Honest pick: Klaviyo (free to 250 profiles / 500 sends; paid email around $20/mo, verify live). Do first: set up welcome, abandoned-cart, and post-purchase flows. Skip if: you have no capture strategy yet, fix that before paying.

Search and merchandising

TL;DR A good search box recovers shoppers who already know what they want. Smart Product Filter & Search is the value pick; Shopify's free Search & Discovery covers small catalogs.

Shoppers who use search convert at a higher rate, because they are telling you exactly what they came for. On a larger catalog, the default Shopify search often returns thin or empty results, and that is a sale walking out.

The honest pick, Smart Product Filter & Search by Boost. It carries 4.9 stars across 2,231 App Store reviews with a free plan and paid tiers from $14/mo (July 2026, verify live), the best mix of rating, volume, and entry price in the category. The free baseline, Shopify Search & Discovery. Shopify's own first-party app is free and genuinely fine for small catalogs, but be honest about its 3.4-star rating across 461 reviews (Shopify App Store, July 2026); it gets thin on large or complex stores. Searchanise is a middle option at 4.8 stars across 1,210 reviews, from $19/mo (verify live). When to upgrade, and how to make results answer real shopper questions, is in our Shopify AI search guide.

Honest pick: Smart Product Filter & Search (4.9 / 2,231; from $14/mo). Free baseline: Shopify Search & Discovery (free; 3.4 / 461, small catalogs only). Skip if: you sell a handful of products and the native search returns them cleanly.

Speed and image optimization

TL;DR 37% of audited stores load a slow mobile homepage, and image optimization is the cheapest speed win. Tiny SEO is the honest pick; Crush is the budget one.

Speed is revenue. Roughly 70% of Shopify traffic now lands on mobile (Contentsquare 2026), and in our audit 37% of stores served a slow, heavy homepage there. Oversized images are the usual first offender.

The honest pick, Tiny SEO Speed Image Optimizer by TinyIMG. It holds 5.0 stars across 2,338 App Store reviews, is free to install for 50 images a month, and starts at $14/mo on the Beginner tier (July 2026, verify live). The budget pick, Crush by Crush.pics. It sits at 4.7 stars across 448 reviews with a free tier and paid plans from $4.99/mo (Shopify App Store, July 2026), the cheapest paid entry in this list. The revenue case is concrete: Google and Deloitte found a 0.1-second mobile improvement lifting retail conversions 8.4% and AOV 9.2%. That is why compressing images tends to beat installing yet another feature app. The rest of the mobile picture is in the mobile conversion pillar.

Honest pick: Tiny SEO Image Optimizer (5.0 / 2,338; free tier, then $14/mo). Budget pick: Crush (4.7 / 448; free tier, then $4.99/mo). Skip if: your theme already serves compressed, correctly sized images and passes mobile speed checks.

A/B testing and finding what to fix

TL;DR Fix the obvious leaks before you test. A testing app earns its place once you have real traffic and a hypothesis worth proving.

A/B testing is the category most stores reach for too early. If Add to Cart is below the fold and there are no reviews, you do not need a test to know what to change. Test once the cheap, obvious fixes are done and you are choosing between two genuinely close options.

When you get there, the free native option is Shopify Rollouts (server-side theme splits, no add-on fee, gated to the Grow plan), and the full field of free and paid tools is laid out in our comparison of all 8 Shopify A/B testing apps, so we link that rather than re-rank it here. The one honest caveat: a low-traffic store cannot feed a classic split test, so read the sample-size math before you pay for one. StorePilot is the tool we build (ours, pre-launch), and it goes after the earlier job in this section, watching real behavior to rank what is losing sales, building a reversible variant, and judging it on revenue per visitor with honest stats: minimum sample, real significance, no early winners, on any plan, free for the first three months then a founding rate around $129/mo (details on the pricing page).

Free start: Shopify Rollouts (native theme splits, Grow plan). Full comparison: all 8 A/B testing apps, honest ratings and prices. Skip if: your traffic is thin or the obvious fixes are still undone.

Free shipping and cart motivators

TL;DR Cart motivators recover the 60% of audited stores with no shipping nudge, and the highest-return version is free to build.

A shipping cost that appears late is one of the most common reasons a cart is abandoned. The fix doubles as an AOV lever, which is why it earns its own category: a free-shipping progress bar tells shoppers how much more unlocks free delivery.

Since 60% of audited stores ran no threshold at all (source), the first move is to set the number with the free-shipping threshold calculator so it lifts orders without eating margin, then add the progress-bar nudge covered in this playbook. Many themes and cart apps include a progress bar already, so check what you own before installing another app. The broader set of cart-recovery moves is in the cart abandonment pillar.

Honest pick: a threshold plus a progress-bar nudge, often already in your theme (free). Do first: set the margin-safe number with the calculator. Skip if: shipping cost and terms are already clear before checkout.

The picks on one table

TL;DR One honest pick per job, with the free or budget route beside it. Match the row to the gap in your store.

Job	Honest pick	App Store rating (Jul 2026)	Entry price	Free or budget route
Reviews & social proof	Judge.me	5.0 (41,318)	$15/mo	Free forever plan
Search & merchandising	Smart Product Filter & Search	4.9 (2,231)	$14/mo	Shopify Search & Discovery (free, 3.4)
Speed & images	Tiny SEO Image Optimizer	5.0 (2,338)	$14/mo	Crush free tier, then $4.99/mo
Email & retention	Klaviyo	Not rated here	~$20/mo email	Free to 250 profiles / 500 sends
AOV & upsell	See our upsell apps guide	–	Varies	Free-shipping threshold bar
A/B testing	See our 8-app comparison	–	From free	Shopify Rollouts (free native)
Find & fix what loses sales	StorePilot (ours, pre-launch)	No reviews yet	~$129/mo	Free first 3 months

App Store ratings and prices verified July 2026 and change often; confirm on the Shopify App Store or each vendor's site. Klaviyo figures are from klaviyo.com and are not an App Store rating. The final row is ours and pre-launch, disclosed as such. For the testing category in full, see the 8-app comparison.

How to choose your five

TL;DR Pick by the gap, in order: fix placement, then add reviews, faster images, better search, and email. Test last.

The order matters more than the brand. Spend on the job you are actually failing, and do the free placement fixes before you pay for anything.

First, fix placement, no app required. Move Add to Cart above the fold, put a review count and trust signals near the buy button, and make shipping cost clear early. These were the widest gaps in our audit and they cost nothing to close; the playbook is the product page pillar.

Then add, in this rough order: reviews (Judge.me, free), image and speed optimization (Tiny SEO or Crush), on-site search if your catalog is large (Smart Product Filter & Search), a free-shipping threshold, and email flows (Klaviyo). That is five apps and one theme habit, which covers most of what separates a store that converts from one that leaks.

Test last. Once those are live and you have the traffic, an A/B testing tool tells you which of two close options wins. Before that, testing is measuring a page you already know is broken. The full method is in the CRO playbook.

The honest takeaway: the best Shopify apps to increase sales are the five that match your gaps, installed in the right order, with the free placement fixes done first. The plan is the right ones, placed well.

Questions merchants keep asking

What are the best Shopify apps to increase sales in 2026?

There is no single winner, because sales come from different jobs. Across a 1,000-store audit we ran in 2026 (shopify-cro-statistics-2026), most stores did not need more apps, they needed the right handful plus placement fixes. A defensible starter set: Judge.me for reviews (free plan, 5.0 stars across 41,318 App Store reviews, July 2026), Klaviyo for email (free up to 250 profiles, verify live), Smart Product Filter & Search for on-site search (4.9 stars, 2,231 reviews, July 2026), and Tiny SEO for image and speed (5.0 stars, 2,338 reviews, July 2026). Then fix the buy button before adding anything else.

How many apps should a Shopify store have?

Fewer than most stores run. In our 2026 audit of 1,000+ stores (shopify-cro-statistics-2026), 37% loaded a slow, heavy homepage on mobile, and app bloat is a common cause: each embed adds scripts and weight. A Google-commissioned Deloitte study of 37 brand sites found a 0.1-second mobile speed improvement lifted retail conversions 8.4% and average order value 9.2%. Aim for the five apps that each earn their place, and audit the rest.

What is the best free Shopify app to increase sales?

Judge.me is the strongest free pick: its forever-free plan carries unlimited reviews and the listing shows 5.0 stars across 41,318 reviews (Shopify App Store, July 2026). Shopify's own Search & Discovery app is free and fine for small catalogs, though its listing sits at 3.4 stars across 461 reviews (July 2026). Klaviyo is free up to 250 active profiles and 500 email sends a month (klaviyo.com, verify live). None of these charge to start.

Do more apps slow down my Shopify store?

Often, yes. Many apps inject scripts, fonts, and assets that run on every page. In our 2026 audit (shopify-cro-statistics-2026), 37% of stores served a slow, heavy homepage on mobile, where roughly 70% of traffic now lands (Contentsquare 2026). Speed is money here: Google and Deloitte measured a 0.1-second mobile improvement lifting retail conversions 8.4% and AOV 9.2%. Before installing another app, remove the ones you do not use and run an image optimizer.

What is the best Shopify review app?

For most stores, Judge.me: a free forever plan, unlimited reviews, and 5.0 stars across 41,318 App Store reviews (July 2026), with the cheapest paid tier at $15/mo (verify live). Loox is the pick when photo and video reviews are the point, at 4.9 stars across 8,209 reviews, with a free plan and a paid Convert tier at $49.99/mo (Shopify App Store, July 2026). It matters because 45% of the stores we audited ran no review app at all (ai-shopping-shopify-conversion).

What is the best Shopify app to increase average order value?

Start with a free-shipping threshold before you buy anything, because 60% of the stores in our 2026 audit had no threshold or nudge (shopify-cro-statistics-2026), and it is one of the most reliable AOV levers. Our free-shipping threshold calculator sets the number, and the increase-average-order-value pillar covers bundles, upsells, and cross-sells. For a full app shortlist, see our Shopify upsell apps guide.

Is Klaviyo worth it for a small Shopify store?

For most stores that email, yes. Klaviyo is free up to 250 active profiles and 500 email sends per month, then paid email starts around $20/mo at 500 contacts (klaviyo.com, verify live). It already had strong adoption in our sample: 47% of audited stores ran Klaviyo (shopify-cro-statistics-2026). The honest caveat is that email pays off only once you are capturing and segmenting subscribers, so set up the flows before you judge the cost.

What is the best Shopify search app?

Smart Product Filter & Search by Boost is the value pick: 4.9 stars across 2,231 App Store reviews with a free plan and paid tiers from $14/mo (July 2026, verify live). Shopify's first-party Search & Discovery is free and enough for small catalogs, but its 3.4-star rating across 461 reviews (July 2026) reflects thin results on larger or more complex stores. Searchanise is another option at 4.8 stars across 1,210 reviews, from $19/mo. Our Shopify AI search guide covers when to upgrade.

Which Shopify app increases conversion the most?

No app wins that on its own, and the biggest gains in our 2026 audit were placement, not plugins (shopify-cro-statistics-2026): 65% buried Add to Cart below the fold on mobile, and 31% had nothing reassuring near the buy button. Fixing those two, then adding reviews, faster images, and better search, moves more than stacking apps. That is the case for auditing before installing.

Do I need an A/B testing app to increase sales?

Not to start. Fix the obvious leaks first: buy-button placement, trust near checkout, page speed. A testing app earns its place once you have real traffic and a hypothesis worth proving. When you get there, our comparison of all 8 Shopify A/B testing apps lays out the free and paid options, and low-traffic stores should read the sample-size caveats before paying for one.