A sofa rendered ten percent too small is worse than no AR at all. Keep that in mind, because everything else follows from it. - Furniture was AR's first killer use case and is still the strongest: see the actual sofa at actual size in your actual room. - True scale is non-negotiable. A wrong-size render destroys trust instantly. - Dead-simple use: point, place, decide. The shopper in a living room holding a phone will not troubleshoot. - IKEA's app proved the concept at massive scale years before anyone else. - The cost curve collapsed: what needed a custom app and an agency five years ago is now a plugin and a 3D model. - A smaller brand that nails true-to-scale placement beats a giant with sloppy AR every time. - Watch the boring stuff: scale, button placement, measurement. Shoppers reward accuracy, not logos. ModelSnap produces the 3D model and AR preview file, $4.99 per HD model.