An AAB (Android App Bundle) is a publishing format introduced by Google that optimizes the distribution and installation of Android apps. It contains all app code and resources but lets Google Play generate device-specific APKs, reducing download size and improving performance. AABs are now the standard for apps on Google Play Store.
→ Learn more about Android App Bundles (AAB)
With Spline you can generate an AAB file of your 3D scene using our Vulkan-based renderer.
Our Vulkan-based renderer enables you to bring all of the interactivity from your 3D designs made in Spline to Android devices and take full advantage of their native performance.
Getting Started
Follow the steps below to get started generating and using AAB files.
We recommend Android 10.0+
Language and Libraries Support
The Spline Android Runtime can be used with Kotlin and Java.
Android Studio Simulator
The performance on the Android Studio simulator is not representative of the performance of the 3D scene on the final app running on physical devices. Depending on your development hardware, the Android simulator sometimes uses only the CPU (lower) or GPU (faster) for rendering graphics. However, the 3D scenes on your device will always use the GPU.
1. Generate an Android App Bundle (AAB) from Spline
- From the top toolbar, press the
Export button to open the export panel;
- Under Android Platform, select the
App Bundle option;
- Fill in all the required settings to build your AAB file. Refer below for more information;
- Press the Generate button.
1.1 Settings Overview
Refer to the below for more information on all the different settings related to APK Generation.
| Setting | Purpose |
|---|
| App Icon | Upload a 1024x1024 image to use as your app icon. |
| App Name | The name of your app or project. |
| Bundle Identifier | Unique identifier for your Android app, which is used to distinguish it from all other apps on the Google Play Store and on devices. |
| Version | The version of your app. |
| Mode | The way your Spline scenes will be embedded. - Cloud will load the scene via URL. - Local will download and use a .splinecontent file. |
| Android version | The Android version the app will be compiled in. |
| Logo | Enable or disable the Spline logo. |
| Orientation | Define the orientation that your app will use. When in Auto-Rotation, you’ll be able to select which orientations your app can use. |
| Status Bar | Define if your app has the status bar visible or hidden. |
2. Publishing and distributing your app
For more information on publishing to the Google Play Store, refer to Android’s documentation on Publishing your app to Google Play Store.
Feature Support Roadmap
Full coverage of all Spline features for Vulkan Renderer is expected to be ready in Q4 2024. Here is a list of each feature’s current status. This list will be updated weekly until everything is fully supported.
| Feature | Status | Notes |
|---|
| Shapes | ✅ | Subdivs, 3D Paths, Text, and Booleans are baked. |
| Materials | ✅ | |
| Events & States | ✅ | |
| Physics | ✅ | |
| Game Controls | ✅ | |
| Variables | ✅ | |
| Post-Processing | ✅ | |
| Particles | ✅ | |
| Animated Models | ✅ | |
| Multi Scenes | ✅ | |
| UI Scenes | 🚧 | |
Native 3D Embeds for Android
With our Vulkan-based renderer, you can now embed native 3D content in your Android projects
Learn more about Native 3D Embeds for Android.
Generate an APK
Export your 3D content for Android devices by generating an Android Package file (APK) directly from Spline.
Learn more about Android Package (APK). 
