Zhan: BaZi Chart Calculator
Four Pillars & Luck Cycles
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Create detailed BaZi charts, follow Da Yun and daily timing, compare stem-branch relationships, save profiles, and consult a classical Chinese reference library.
Zhan is a BaZi and Four Pillars workspace for building natal charts, examining luck cycles, organizing case notes, and consulting classical references.
[Build a Four Pillars chart]
Enter a birth date, time, and place to calculate the year, month, day, and hour pillars. Review Heavenly Stems, Earthly Branches, hidden stems, Ten Gods, Five Elements, Na Yin, void branches, Twelve Growth Phases, symbolic stars, and the Day Master in one chart.
[Follow timing from Da Yun to the current day]
Move from the natal chart through Da Yun, annual, monthly, daily, and hourly layers. The detailed chart keeps the active timing pillars beside the natal pillars, so combinations, clashes, punishments, harms, breaks, generation, control, support, and transformation can be checked in context.
[Choose the calculation method]
For supported birthplaces in China, you can apply true solar time. You can also choose whether annual and monthly timing changes by day or at the exact solar-term moment, select the Taiji reference point, and control which branch, combination-status, and hidden-stem relationships appear in the detailed chart.
[Keep profiles and case notes]
Save charts for yourself, family, friends, or research cases, then add notes to each profile. Use the built-in historical figures as reference cases, or search for possible birth dates from a selected Four Pillars combination.
[Read terms and source texts]
The Library covers Ten Gods, symbolic stars, Na Yin, and the Twelve Growth Phases. It also includes classical Chinese texts such as San Ming Tong Hui, Di Tian Sui, Zi Ping Zhen Quan, and Yuan Hai Zi Ping, making it easier to compare a chart term with its traditional source.
[Use Home Screen widgets]
Select a saved profile to view current Da Yun, annual, monthly, and daily timing, or a seven-day overview, without rebuilding the chart.
BaZi content is provided for study, cultural reference, and personal reflection. It is not a substitute for medical, legal, financial, or other professional advice.
By using this app, you agree to Apple's Standard End User License Agreement (EULA):
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- Added annual stem-branch relationship highlights against the natal pillars
- Tap a luck-cycle item to bring it directly to the center
- Refined flow analysis, pattern assessment, and climate references
- Improved chart-view controls and multilingual guidance
The developer, 占辉 百, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 占辉 百
- Size
- 19.4 MB
- Category
- Lifestyle
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
English and 4 more
- English, Japanese, Korean, Simplified Chinese, Traditional Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Monthly Premium Membership $2.99
- 永久高级会员 $49.99
- Yearly Premium Membership $24.99
- Copyright
- © 2026 Mid21 Studio.
