The Shopify app stack for fashion brands in 2026

How we picked them

• One fashion job each. Fit, photos, returns, restocks, wishlists, email.
• Shopify first. Where Shopify does the job free, we say so.
• Official listing, with a free plan or trial stated.
• The meter named. Charts, orders, returns, alerts, actions or your Shopify plan.

Prices are left out. For most apps here, the listing and the vendor's site showed different tables. Open the live listing before you decide. We make Idukki, one of the eleven, and say so where it appears.

The stack at a glance

Size and fit: answer the question before the order

A size chart on every product page is the cheapest return prevention you can buy. Put it next to the size picker. Use your own measurements, taken from the garment. A generic chart copied from a supplier causes the returns you wanted to stop.

Kiwi Size Chart & Recommender

Kiwi builds size charts and adds a size recommender that suggests a size. Its free plan shows a Kiwi watermark and caps the number of charts. Higher tiers add charges based on order volume, on top of the tier fee. Check those terms on the listing before you upgrade.

ESC Size Charts

ESC Size Charts, from Eastside Co, does charts and guides only, without a recommender. The free plan allows up to three charts with an ESC watermark. Premium is a flat monthly fee for unlimited charts and import. Another app uses a similar name, so install from the Eastside Co listing.

Customer photos: show the clothes on real people

A studio shot shows a garment on a model. A customer photo shows it on someone like the shopper. Put customer photos near the size picker. Add height and size to the caption when the customer gave them. That answers fit and look in one glance.

Idukki (ours)

We make Idukki, so weigh this accordingly. It collects customer posts from Instagram, TikTok and other social sources. It imports reviews from Google, Trustpilot, TripAdvisor and Judge.me. It shows them as shoppable galleries and video. Each product in a photo is tagged to the cart. Rights are recorded per post. The free plan covers image galleries. Shoppable video starts on the $45 plan.

Loox

Loox collects photo reviews after each order and shows them in polished galleries. Its free plan lasts until 500 orders in total. Video reviews and syndication need its paid plan, billed by orders. See Judge.me vs Loox vs Okendo for the full review-app comparison.

Returns and exchanges: keep the sale

An exchange keeps the revenue. A refund loses it. Make the exchange the easier path. Shopify's free self-serve returns let customers request returns from their account. Customers cannot request an exchange there. You can add exchange items by hand when you approve a return. Self-serve returns need the new customer accounts.

Loop Returns & Exchanges

Loop handles returns and exchanges, with tracking and order editing. The listing shows a free plan. Paid tiers add automated policies, carrier rate shopping and workflows. Instant exchange and fraud prevention sit on a higher tier. The listing says recurring and usage-based charges are billed every 30 days.

AfterShip Returns & Exchanges

AfterShip Returns, formerly Returns Center, covers returns, exchanges and store credit. It has a free tier and a trial. Paid plans include a set number of returns a month and charge per return above it. Its listing pages showed different price tables when we checked, so confirm the live one.

Back in stock: catch the sold-out size

A sold-out size is a shopper ready to buy. Offer an alert on every out-of-stock variant. Send it the day stock lands. Shoppers tend to forget within a week or two.

Appikon Back In Stock

Appikon sends back-in-stock alerts by email and SMS. The free plan covers 10 emails a month, which suits testing only. Klaviyo and Mailchimp sync come on paid tiers. SMS adds a per-message fee. Another app called "Notify Me!" is a different developer, so check the listing name.

Swym Back in Stock Alerts

Swym's alerts app has no free plan and a 30-day trial. Tiers are set by alert requests a month. Klaviyo and Omnisend connect on the entry tier. Multi-location inventory support is on the top tier only.

Wishlists: remember what they wanted

Fashion shoppers browse for days before they buy. A wishlist keeps their picks and gives you a reason to email. Price drops and restocks on saved items make the best reminders.

Swym Wishlist Plus

Swym Wishlist Plus saves items, sends reminders and adds price-drop and stock alerts on higher tiers. Plans are set by wishlist actions a month. Swym's own pricing notes say alerts sent through your email tool count toward the limit. Its free plan and entry price differed between pages, so check the live listing.

Swish (formerly Wishlist King)

Swish has no free plan and a 30-day trial. Its price follows your Shopify plan, from Basic to Plus. Every feature comes on every tier. That makes the bill easy to predict.

Email: the second chance

Your email app turns wishlist saves, restock alerts and browsing into sales. Build four flows first: welcome, abandoned cart, browse abandonment and post-purchase. Klaviyo and Omnisend both have free plans for small lists. We compare them in Klaviyo vs Omnisend.

Where to start

1. 1Measure your garments and add a size chart to every product.
2. 2Add customer photos near the size picker, with height and size.
3. 3Turn on Shopify self-serve returns. Add an exchange app when exchanges matter.
4. 4Add back-in-stock alerts to every sold-out variant.
5. 5Add a wishlist once your email flows are live.