A mirror,
not a forecast.

DecaSoul is built on the Ten Souls (十神) — a system of self-knowledge drawn from a tradition that is more than 4,000 years old. For centuries, this framework helped people understand how they love, work, and grow. We have translated it into ten modern archetypes, so you can see yourself in it.

We are not a fortune-telling service. We do not predict your future, and we will never tell you what will happen. We reveal a pattern — the shape of how you are wired — and leave the choosing to you. A mirror, not a forecast. A starting point, not a verdict.

Our three principles

• We do not give verdicts. We describe patterns; we never tell you what you “should” do.
• We show the machinery. The ancient calendar is transparent; the same date always gives the same answer.
• We treat your data as a letter. Encrypted, never sold, always yours to delete.