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Birth-Based Type Indicator

A personality type read from your birth chart.

BBTI turns a consistent set of natal-chart factors into four reflective personality dimensions. It is not a questionnaire, diagnosis, or prediction.

METHOD

A chart-led method, not a test.

  • Uses your birth date, time, and selected place.
  • Reads your natal chart through fixed, deterministic rules.
  • Does not ask subjective questions or use AI to choose a type.

For self-reflection only. It is not medical, psychological, or career advice.

REPORT

Inside the report

  1. 01Your four dimensions
  2. 02Whole Sign and Placidus comparison
  3. 03Type profile and reflective prompts
  4. 04Method and limitation notes

PROCESS

How it works

  1. 01

    Choose or enter birth details

  2. 02

    Calculate a complete natal chart

  3. 03

    Read your BBTI type and report

FAQ

Questions, answered

How is this different from a personality quiz?

BBTI begins with natal-chart structure and applies fixed rules; it does not infer your answers from a questionnaire.

Do I need an accurate birth time?

Yes, as much as possible. Time changes houses and angles. An approximate time is allowed but marked in the report.

What if I do not know my birth time?

BBTI does not substitute noon. Use Birth Time Check first, or return when you have a defensible time range.

Will AstrowlAI save my details?

A temporary entry is kept only in an encrypted, expiring private session. It is never saved as a profile unless you explicitly save a chart elsewhere.

Can I use a saved chart?

Yes. If you are signed in, you choose the saved chart yourself before a report is generated.

Will my report change?

The same chart and BBTI algorithm version produce the same result. A method version is shown with every report.

Is BBTI a diagnosis?

No. It is a reflective astrology product and is not medical, psychological, or vocational advice.