Room Planner vs AR Viewer vs 3D Configurator: Which One Does Your Shopper Need?

A shopper looking at a sofa online is trying to answer three questions, usually in this order: does it fit, is this the right version of it, and does it go with the rest of the room. Three different 3D commerce tools answer those three questions, and they are routinely confused with one another because they all involve a 3D model of the sofa.

This guide separates them, says which shopper question each one answers, and suggests the order to add them in. It is written for brands that sell furniture, lighting, rugs and décor, where all three questions get asked.

The three tools, one line each

They are not three tiers of the same thing. A brand can run all three, and the ones that get the most from 3D usually do.

The AR viewer: the fit question

An AR viewer places one product in the shopper's real room through the phone camera, at true scale. On Android it hands the model to Scene Viewer; on iOS, to AR Quick Look. There is no app to install because the viewer is already part of the operating system.

It answers the fit question better than any other medium, including a showroom, because it is the shopper's own room. It is also the fastest tool to add: one model per product and a button.

What it does not do is let the shopper change the product, or see it next to anything else they are considering. The sofa in AR is the default sofa, alone.

Add it first if: your products are large, your return reason is "did not fit" or "looked different in my space", and your catalogue is mostly fixed builds.

The 3D configurator: the version question

A 3D product configurator replaces the gallery with a live model whose options the shopper controls: fabric, finish, size, modules, hardware. Each change renders on the model, each configuration carries a price, and the configured build can be sent to AR or into a quote.

It answers the version question, which is the one that matters when the catalogue has options. A sofa in four fabrics and three sizes is twelve products that cannot all be photographed; a configurator shows all twelve from one asset.

What it does not do is show that configured sofa next to the rug or under the lamp. The configurator is single-product by design.

Add it first if: your products are configurable, your sales team spends its day quoting, or your factory receives orders as screenshots.

The room planner: the composition question

A room planner, or room visualizer, lets the shopper place several products from the catalogue in one 3D room, arrange them, dress the room around them (floor, walls, rug, lighting, art) and view the whole thing from any angle, in plan, at eye height, and in AR.

It answers the composition question: does this go with that. It is the only one of the three that sells the second and third item in the basket, because it is the only one that shows two products at once.

Done well, it also absorbs the other two. In Thridify's room the configurator opens inside the room page, so the placed sofa is the configured sofa, and the AR step exports the composed room rather than one item. The fit question and the version question get answered on the way to the composition question.

What it does not do is replace the product page. Shoppers arrive from search and ads on product pages; the room is where you send them next.

Add it first if: you sell the room (furniture plus rugs plus lighting plus décor), your lifestyle photography is your best-performing content, or your sales team works exhibitions and showrooms where composing a room on the spot closes the sale.

How they combine

The combinations that work, in rough order of how often they occur:

Configurator plus AR viewer is the standard 3D product page. The shopper specifies the product, then checks it fits. This is where most brands with 3D are today, and it is the right place to be for a single-product purchase.

Room planner plus configurator is the merchandising stack. The brand publishes curated looks from its admin; the shopper opens one, swaps the fabric, adds a second chair, changes the rug. Everything placed is a real configuration of a real product.

All three is the full set. Product page for arrival and specification, AR for fit, room for the rest of the basket. The models are shared, so the third tool does not cost a third set of assets.

The order to add them in

If you have none of the three: start with the tool that matches your return reason. "Did not fit" means AR. "Wrong colour, wrong size" means configurator. "Did not match my other furniture" means room planner, though that reason is rarely written on a returns form; it shows up as a one-item basket and no second order.

If you have AR on the product page: the configurator is the natural next step if your catalogue has options, and the room planner if it does not. A fixed-build catalogue of sofas, rugs and lamps gains more from being composable than from being configurable.

If you have a configurator: the room planner reuses it. The configurator you built for the product page is the one that runs inside the room.

A note on what they all need

All three run on the same 3D models, in glTF or GLB for the browser and USDZ for iOS AR. If the models do not exist yet, that is the first project, and it is the same project regardless of which tool you add. A model authored in real metres, with compressed textures and sensible polygon counts, works in all three. A model normalised to a convenient size, or exported at forty megabytes, breaks all three. The guide to preparing a 3D model for the web covers what good looks like.

Deciding

If you only remember one thing: the AR viewer sells fit, the configurator sells the version, the room planner sells the basket. Pick by the question your shoppers are actually failing to answer, not by which demo looked most impressive. A 30-minute demo built around your category will show all three on Thridify's existing live catalogue, and is the fastest way to see which one your product pages are missing.