Hi PH — I'm the maker.

I built Agua after trying a few online I Ching tools: most either show a fixed block of hexagram text, or hand the whole reading to a language model and let it improvise. I wanted the opposite split.

So the coins and the chart are computed by a deterministic rules engine that follows the traditional six-line method. AI only rewrites the already-computed reading so it fits the question you asked, and it can answer follow-ups on the same hexagram. When AI is off, you get the rule-based reading.

Two things I deliberately kept boring: no account (your history is local to the browser), and an FAQ that spells out exactly what gets sent to the model provider when you use AI.

All 64 hexagrams are readable in English and Spanish; the origin is a Chinese-language tool.

What I'd most like to hear: did the reading make sense to you without knowing the terminology, and where did the flow lose you?