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ComparedCATCHESFacts checked September 21, 2026

CATCHES alternatives (2027): luxury physics simulation, or a render on Shopify.

CATCHES launched RealFit with AMIRI in March 2026: measurements plus a photo, physics-simulated, no published price, no self-serve. What it does that nothing else does, and how a Shopify try-on and sizing app compares.

CATCHES is a New York and London company that launched RealFit on the AMIRI website on 16 March 2026. The shopper enters measurements and a photograph to create a digital twin, then sees how each garment fits, drapes and moves and can toggle between sizes. The simulation is physics-based and runs on NVIDIA's platform; the company has raised $10 million from investors including Antoine Arnault, and its founding team includes simulation PhDs from Disney and Pixar. Garu estimates measurements from one photo, matches them to your chart and renders the garment on the shopper. CATCHES facts come from its launch release and coverage on September 21, 2026.

We make Garu, so read accordingly. Where the other side is ahead, this page says so plainly.

The short answer

Choose CATCHES if you are a luxury house that wants fabric-level physics simulation, a bespoke integration, and a vendor built for that tier. AMIRI is the first public deployment, and it is the right reference for that market.

Choose Garu if you are a fashion brand on Shopify that wants the shopper to see themselves in the garment and get a size, installed this week, at a published price. CATCHES publishes no pricing and no self-serve path.

Side by side

GaruCATCHES
How you buyShopify App Store, self-serveContact sales; bespoke integration
Published priceFree, $199, $399, Plus from $999Not published
Shopper inputOne full-length photoMeasurements plus a photograph
Try-onRendered, front and back; 360° and every size on PlusPhysics-simulated twin; fit, drape and movement; toggle between sizes
Size recommendationOne size per garment, matched to your chart, with a fit noteFit shown per size on the twin
Shopify App Store listingYesNone found on September 21, 2026
Public deploymentsIndependent brands on ShopifyAMIRI (launched 16 March 2026)
FundingBootstrapped$10 million raised

Where CATCHES is genuinely ahead

  • Fabric physics. Two years of GPU-accelerated simulation before the AI layer, aimed at weight, structure, drape and movement. Garu renders drape; it does not simulate cloth physics.
  • Motion. RealFit shows the garment moving on the twin. Garu's views are stills, front and back, with a 360° rotation on Plus.
  • Backing. $10 million and NVIDIA's platform, for a luxury launch partner.

Where Garu is built differently

  • One photo, no measurements to type. RealFit asks for measurements and a photo; Garu estimates the measurements from the photo.
  • Self-serve on Shopify. App embed, free tier, tiers on the page. CATCHES is a sales conversation.
  • Every size rendered on Plus. Both tools let a shopper compare sizes on their own body; Garu does it as a Shopify app.
  • Live on merchant stores now. Garu runs on independent brands' product pages today; RealFit's first public deployment is one luxury site.

The honest decision rule

If you are AMIRI's size and want AMIRI's tool, CATCHES built it for you. If you are a brand on Shopify that wants the same class of answer, a render and a size from one photo, without a bespoke build, that is Garu, and it costs nothing to test on your own products.

Questions merchants ask

What is an alternative to CATCHES RealFit?

For a brand on Shopify, Garu: a render of the shopper in the garment from one photo, front and back, with a size matched to your chart, installed as an app at a published price. CATCHES simulates fabric physics for a bespoke luxury integration.

What does CATCHES RealFit do?

The shopper enters measurements and a photograph to create a digital twin, then sees how a garment fits, drapes and moves and can toggle between sizes. It launched on the AMIRI website on 16 March 2026.

Is CATCHES available to small brands?

Not through any self-serve channel found on the check date. It publishes no price and no App Store listing.