I’m building a marker-based augmented-reality application that will run smoothly on both iOS and Android. The goal is to overlay step-by-step assembly guidance, safety warnings, and real-time part information directly onto machinery so technicians can work faster and with fewer errors on the shop floor. You’ll start by recognising custom printed markers that I will supply. Once a marker is detected, the app should align an accurate 3D model of the component, play the relevant animation or video, and display contextual data pulled from a small local JSON file (we can later hook in an API, so clean architecture is important). I’m comfortable if you build in Unity with AR Foundation and Vuforia, but I’m open to another engine as long as we still meet the following acceptance criteria: • Reliable marker detection under typical factory lighting (fluorescent, mixed shadows) at 0.5–2 m. • Crisp rendering of models and UI at 60 fps on an iPhone 12 and a mid-range Android device. • Simple menu to choose a machine, download its asset bundle, and view a usage log. • Xcode and Android Studio projects handed over with commented source code, a brief README for build steps, and a short screen-capture of the app in action. If you’ve shipped similar industrial AR tools or have solid Vuforia/ARCore/ARKit experience, I’d like to see that. Let me know how soon you can demo a first prototype with one marker and one animated model.