Cross-Platform AR/VR is the Future — Here’s How We Build It with Unity

Augmented Reality (AR) and Virtual Reality (VR) are transforming industries, from gaming and entertainment to education, healthcare, and enterprise training. As AR/VR adoption grows, the demand for seamless, cross-platform experiences is becoming critical. Users expect applications to work effortlessly across devices—whether it’s a high-end VR headset like the Oculus Quest, an AR-enabled smartphone, or even a web browser. Unity, a leading game development engine, is at the forefront of making this vision a reality. If you’re looking to hire a game developer or partner with a Unity game development company, this blog will explore why cross-platform AR/VR is the future and how developers can leverage Unity to build these immersive experiences.

Why Cross-Platform AR/VR Matters

The AR/VR ecosystem is fragmented. Devices like the Meta Quest, Apple Vision Pro, HoloLens, and countless mobile devices each have unique hardware capabilities, operating systems, and input methods. This diversity poses a challenge: how do developers create consistent, high-quality experiences without building separate apps for each platform? For businesses aiming to hire an AR developer or hire a VR developer, cross-platform solutions are key to maximizing reach and efficiency.

Cross-platform AR/VR solves this by enabling a single codebase to deploy across multiple devices, offering several benefits:

• Wider Reach: Targeting multiple platforms increases your audience, from casual mobile users to dedicated VR enthusiasts.
• Cost Efficiency: Maintaining one codebase reduces development and maintenance costs compared to platform-specific apps.
• Consistent User Experience: A unified codebase ensures consistent visuals, interactions, and performance across devices.
• Future-Proofing: As new AR/VR devices emerge, cross-platform frameworks make it easier to adapt without starting from scratch.

The future of AR/VR lies in accessibility and interoperability. Unity, with its robust tools and ecosystem, is uniquely positioned to help developers and game development companies achieve this.

Building Cross-Platform AR/VR with Unity

Unity is a powerful engine for AR/VR development, supporting a wide range of platforms, including Oculus, HoloLens, ARKit (iOS), ARCore (Android), and WebXR for browser-based experiences. Here’s a step-by-step guide to building cross-platform AR/VR applications with Unity, ideal for those looking to hire a game developer skilled in immersive technologies:

Set Up Your Unity Project

Start by creating a new Unity project with the appropriate settings for AR/VR development:

• Install Unity Hub and Editor: Use Unity Hub to manage multiple Unity Editor versions. For AR/VR, Unity 2022 LTS or later is recommended for stability and feature support.
• Configure Build Settings: Select the target platforms (e.g., Android, iOS, Windows, WebGL) in the Build Settings. Enable XR support by installing the XR Plugin Management package via the Package Manager.
• Enable XR Plugins: In Project Settings > XR Plug-in Management, enable plugins for your target devices (e.g., Oculus, OpenXR, ARKit, ARCore).

Use Unity’s XR Interaction Toolkit

Unity’s XR Interaction Toolkit is a key component for cross-platform development. It provides a unified API for handling inputs, interactions, and locomotion across AR/VR devices, making it a go-to tool for any Unity game development company.

• Install the Toolkit: Add the XR Interaction Toolkit from the Package Manager.
• Set Up XR Rig: Create an XR Rig (a camera and controller setup) to handle user movement and interactions. The toolkit’s pre-built components, like XR Controller and XR Grab Interactable, abstract device-specific inputs, ensuring compatibility across platforms.
• Handle Input Abstraction: Use the toolkit’s action-based input system to map controller buttons, gestures, and touch inputs to generic actions (e.g., “grab” or “move”). This allows the same code to work with Oculus controllers, mobile touchscreens, or HoloLens hand tracking.

Optimize for Multiple Platforms

Performance varies significantly across AR/VR devices, from powerful PCs to resource-constrained smartphones. To ensure smooth experiences, optimize your project, a critical skill for those you might hire as an AR developer or VR developer:

• Adaptive Graphics: Use Unity’s Universal Render Pipeline (URP) for lightweight, scalable rendering. Adjust quality settings dynamically based on the target device using Unity’s Quality Settings.
• Asset Optimization: Reduce polygon counts, use compressed textures, and bake lighting where possible to improve performance on mobile devices.
• Platform-Specific Features: Use preprocessor directives (#if UNITY_ANDROID, #if UNITY_IOS) to enable platform-specific features, like ARCore’s environmental understanding on Android or ARKit’s face tracking on iOS.

Leverage AR Foundation for Mobile AR

For mobile AR, Unity’s AR Foundation provides a cross-platform framework that abstracts ARKit and ARCore. This allows you to build AR experiences that work on both iOS and Android with minimal changes, streamlining workflows for any game development company.

• Set Up AR Foundation: Install AR Foundation and its dependencies (ARKit XR Plugin, ARCore XR Plugin) from the Package Manager.
• Build AR Features: Use AR Foundation components like AR Plane Manager for surface detection, AR Raycast Manager for hit testing, and AR Anchor Manager for persistent objects. These components work seamlessly across iOS and Android.
• Test on Devices: Regularly test on both iOS and Android devices to ensure consistent behavior, as ARKit and ARCore may handle edge cases differently.

Support WebXR for Browser-Based Experiences

WebXR enables AR/VR experiences directly in web browsers, making them accessible without app downloads. Unity supports WebXR through its WebGL build target, a valuable feature for developers you might hire for VR development:

• Enable WebXR Export: Install the WebXR Export package from Unity’s GitHub repository or a trusted source.
• Configure WebGL Build: In Build Settings, select WebGL as the platform and enable WebXR support in Player Settings.
• Optimize for Web: Keep scenes lightweight, as browser-based AR/VR has stricter performance constraints. Test in browsers like Chrome and Firefox, which support WebXR.

Test and Iterate

Cross-platform development requires rigorous testing to ensure compatibility and performance, a key responsibility for any Unity game development company:

• Test on Target Devices: Use physical devices (e.g., Oculus Quest, iPhone, Android phones) to validate functionality. Emulators like XR Simulation in Unity can help, but they don’t fully replicate real-world behavior.
• Profile Performance: Use Unity’s Profiler to identify bottlenecks, such as CPU/GPU usage or memory leaks, and optimize accordingly.
• Gather User Feedback: Deploy beta versions to users on different platforms to identify usability issues and device-specific bugs.

Deploy and Maintain

Once your app is ready, deploy it to the appropriate stores (e.g., Oculus Store, App Store, Google Play, or a web server for WebXR). Use Unity’s Cloud Build to automate builds for multiple platforms. Post-launch, monitor analytics and user feedback to release updates that address issues and add features, ensuring a seamless experience for users.

Challenges and Solutions

While Unity simplifies cross-platform AR/VR development, challenges remain:

• Device Fragmentation: Hardware differences can lead to inconsistent performance. Solution: Use adaptive quality settings and test extensively on target devices.
• Input Variability: Controllers, gestures, and touch inputs vary across devices. Solution: Leverage the XR Interaction Toolkit’s input abstraction.
• Platform Restrictions: Some platforms impose limitations, like Apple’s strict ARKit guidelines. Solution: Stay updated on platform SDKs and guidelines to ensure compliance.

The Future of Cross-Platform AR/VR

As AR/VR technology evolves, cross-platform development will become even more critical. Emerging standards like OpenXR, supported by Unity, promise greater interoperability across devices. Additionally, advancements in cloud streaming and 5G will enable high-fidelity AR/VR experiences on low-powered devices, further democratizing access. For businesses looking to hire an AR developer or hire a VR developer, investing in Unity expertise is a strategic move.

Unity is well-positioned to lead this charge, with its extensive platform support, active community, and growing ecosystem of tools like AR Foundation and the XR Interaction Toolkit. By mastering these tools, developers and game development companies can create immersive, accessible AR/VR experiences that reach users wherever they are.

Conclusion

Cross-platform AR/VR is not just a trend it’s the future of immersive technology. With Unity, developers have the tools to build scalable, high-quality applications that work across headsets, smartphones, and browsers. By leveraging Unity’s XR Interaction Toolkit, AR Foundation, and WebXR support, you can create experiences that are accessible, engaging, and future-proof. Whether you’re looking to hire a game developer or partner with a Unity game development company, now is the time to start building. Join the AR/VR revolution today!