App technology
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| Technology | Role | Source and license |
|---|---|---|
| Swift and SwiftUI | Native app language and interface framework. | Apple platform technology, governed by Apple’s developer terms. |
| RealityKit | Native 3D presentation and avatar interaction. | Apple platform technology, governed by Apple’s developer terms. |
| Core Image | On-device QR code generation. | Apple platform technology, governed by Apple’s developer terms. |
| VRMKit | VRM parsing and RealityKit rendering. | VRMKit 0.10.0 by Tatsuya Tanaka, MIT License. |
| Sentry | Privacy-conscious crash, hang, and performance diagnostics. | Sentry Cocoa 9.29.0 by Functional Software, Inc., MIT License. |
Standards and community work
The VRM format and its public specifications make portable humanoid avatars possible. SonaPin’s compatibility work is informed by the VRM specification and the broader open avatar ecosystem.
Documentation site
This site is hand-built static HTML and CSS. Its build step uses Bun plus Node-compatible standard-library file APIs. It loads no third-party fonts, analytics, advertising, or runtime scripts.
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