Simple AR App
This topic walks through the planning steps for a beginner AR app. The example places a virtual plant on a real table using a phone camera.
Step 1: Define the Goal
State the app's purpose in one sentence. In this example, the goal reads: let a user place a virtual plant model on any flat surface and view it from different angles.
Step 2: Choose the Tools
This project uses Unity with AR Foundation, which supports both ARKit and ARCore through one shared codebase. This choice lets the finished app run on both iPhone and Android devices without rewriting the core logic.
Step 3: Detect a Surface
The app scans the camera feed for flat horizontal surfaces, such as a tabletop or floor. AR Foundation highlights detected surfaces with a visual grid, so the user knows where they can place the object.
Diagram: App Build Flow
Step 4: Place the Object on Tap
When the user taps a highlighted surface, the app spawns the plant model at that exact point. The model attaches to the real-world surface, so it appears to stay fixed even as the user moves the phone.
Step 5: Allow Viewing From Different Angles
Because the model is anchored to a real surface, walking around the table and viewing the plant from the side or top happens automatically. No extra code is needed for this feature, since the AR system tracks the phone's position continuously.
Simple Explanation
Think of surface detection like laying an invisible sheet of paper on the table. Tapping the screen is like pinning a sticker onto that paper. The sticker stays glued to that spot no matter how you move around the table afterward.
Testing the App
Test the app in different lighting conditions and on different surface types, since dark rooms and shiny tables can confuse surface detection. Testing across several real environments catches problems before public release.
Why This Project Matters
This simple plant placement app covers the core AR workflow used in far larger projects, including furniture apps, retail try-on tools, and industrial design previews.