Acknowledgments

Built on a generous ecosystem.

SonaPin uses Apple platform technologies, open standards, and a small set of pinned open-source dependencies.

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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