I need a complete astrology application whose core job is to generate accurate birth (natal) charts. A user should be able to enter date, exact time, and place of birth and instantly receive a visual chart with the usual planetary positions, house cusps and aspect table. Platforms The solution must run natively on Windows and through a Web interface; I would also like Mac OS support and, if you can package the same codebase into Android and iOS apps, even better. Please indicate how you plan to achieve this multi-platform reach—whether that is via Electron, Flutter, React/Node, or another framework that compiles to desktop, web, and mobile. Key requirements • High-precision ephemeris calculations so the chart data is reliable • Clean UI that shows the wheel, tables and brief text interpretation side by side • Ability to save, print or export the chart (PDF/PNG) • Time-zone and daylight-savings handling built in • Source code and build/installation instructions delivered at the end Acceptance criteria A test run with five sample birth details must produce charts that match the Swiss Ephemeris within accepted orb limits, and the installer / web deployment should work on first try without manual tweaking. Let me know your proposed tech stack, any existing astrology engines you intend to integrate, and the estimated timeline from prototype to final build.