Show HN: AI Usage Ball – Claude/Codex/Antigravity Quota as Mac Liquid Orbs (github.com)

A new source-available macOS desktop application, AI Usage Ball, has been introduced, allowing users to visualize their usage quotas for AI coding tools like Claude, Codex/ChatGPT, and Antigravity through animated liquid gauges. This app provides a clear view of session limits, weekly restrictions, and countdowns for resets without needing to open each provider. Users can download a signed version for Apple Silicon and access a 30-day trial without a credit card. The first 100 users offering feedback can apply for a free lifetime license. The significance of AI Usage Ball lies in its focus on usability and transparency, addressing a common issue faced by developers who rely on multiple AI services. The app's architecture includes a Rust-based frontend using Tauri and a Python backend using FastAPI, which anonymously reads local usage data and streams it to the frontend over Server-Sent Events (SSE). It emphasizes security by keeping all data processing local, ensuring that nothing is transmitted through external servers. Open source and licensed under the PolyForm Noncommercial License 1.0.0, the app invites community auditing and self-building, promoting collaborative development in the AI/ML ecosystem.