Each property attacks the same problem from a different layer: the application, the operating system, the data format — and the network that carries them when there is none.
YuanYu
Consumer productLive
Multi-system chart calculation for BaZi, Zi Wei Dou Shu and Vedic astrology, with true-solar-time correction, written reports and companion hardware.
A bare-metal operating system in the lineage of TempleOS: RISC-V, Ring 0, a fixed-width 16-bit Hanzi character model and contiguous-sector storage. Designed for contemplation, not telemetry.
xMesh is our networkless layer: a LoRa mesh that moves small packets between devices where cellular and Wi-Fi coverage is absent or untrusted. It is designed to be run by independent node operators rather than one carrier. The network, its economics and a token model for rewarding operators are all in research; nothing is operating commercially.
The Unified Calendar Protocol locks seven world calendars to a single UTC timestamp. The reference implementation is published on npm and GitHub under the MIT licence.
All four rest on the same assumptions: UTC as ground truth, corrections applied explicitly, and no hidden state. A chart produced by the app, a timestamp decoded by the library and a packet carried over the mesh all describe the same sky.
Start with the engine
The calendar core is free, documented and MIT licensed. It is the fastest way to see how we work.