What is the difference between size help and try-on?

Try-on answers 'how does this look on me'

AI Try-On takes one photo the shopper uploads and returns an image of them in the product, on the product page, in about 20 seconds — no app, account, or camera permission involved. On the Scale plan there is also realtime video try-on. What it resolves is appearance doubt: how the color reads against their skin or hair, how the shape sits on their frame, whether the piece suits them at all. Those are questions a flat product photo on a model cannot answer, and no size chart even attempts to.

Size Help answers 'which size should I order'

Size Help builds its recommendation from your own size charts rather than a generic sizing database, so the answer reflects how your products are actually cut. That makes your charts the foundation: a recommendation is only as good as the chart behind it, which is a reason to keep charts accurate for each product or category. On pricing, the split is simple — the Starter plan at $14.99 per month lists unlimited size, while photo try-ons are metered in credits. For how the suggestions are produced, see the smart size suggestions FAQ.

Why the two compound instead of competing

The tools remove different reasons to abandon a purchase. A shopper can be fully convinced a jacket suits them and still stall at the size selector; another can trust your chart completely and still wonder whether the color works on them. Try-on clears the first doubt, Size Help clears the second, and a shopper who has seen the product on their own photo and been told which size to pick has little left to hesitate over except price. That is why they belong in the same product-page flow rather than as alternatives you choose between.

How to evaluate each on your own store

Try-on can be tested before paying anything: the Free plan includes unlimited try-ons, so run your best-sellers through it with your own photos and judge the results. Size Help depends on your charts, so the check there is different — once you are on a plan that includes it, load charts for a few products, run the size flow yourself, and see whether the suggestion matches what you would tell that customer. Then let Looksy's analytics, which report what shoppers try on, add to cart, and buy, show you how each feature actually gets used once both are live.

Sources: the public Shopify App Store listing for Looksy. Last checked 27 July 2026.

Related questions: Should I mention try-on in my returns emails? · Should out-of-stock products keep try-on? · How do I get shoppers to actually use try-on?