I want to give our customers the power to stand in their own bathroom, raise their phone and instantly see our shower doors, bathtubs, shower bases, glass panels and accessories appear at true-to-life scale. The app must run on both iOS and Android. Using ARKit and ARCore (or a comparable cross-platform engine such as Unity or Flutter’s AR plugins), the camera scan should detect walls, floor and ceiling, calculate real dimensions and create an editable room model automatically. Once the scan is finished, the user selects a product from our catalogue and places it in the space. For performance reasons basic 3D models are enough, yet the scale and orientation have to be exact. Inside the configurator the user can adjust three key options—Size, Finish and Glass type—and see each change update in the scene in real time. When the layout is final, a single tap should generate a snapshot plus a data package (room measurements + chosen product codes + option values) and send it to our sales team as a quotation request. A copy should also be saved locally so the customer can reopen or share the project later. Acceptance criteria • Room dimensions accurate within ±2 cm of manual measurement. • Products render at 1:1 scale and remain anchored while the user moves. • Configurator reliably switches Size, Finish and Glass type without visual glitches. • Quote request arrives in our inbox as structured JSON or PDF with embedded image. • App meets App Store and Google Play submission guidelines and is handed over with commented source code and brief technical documentation.