| What it does | Free Four Pillars of Destiny chart calculator with true solar time
| Free concrete slab cost estimator with material, labor and site prep breakdowns
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Freemium
| Free
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| Pricing | Charts and tools free. AI readings: 1 reading for $4.99, 3 readings for $9.99, 10 readings for $19.99.
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| Key features | - Four Pillars with hidden stems and heavenly stems and earthly branches
- Day Master calculation and analysis
- Ten Gods relationship mapping
- Five Elements distribution with visible and hidden stems
- Luck Pillars with ten-year periods and annual pillars
- True solar time calculation with longitude and equation of time correction
- Two-chart comparison showing stem/branch relations
- Export and print functionality including PDF and JSON download
- Time range input for uncertain birth times
- Bilingual interface in English and Simplified Chinese
| - Material, labor and delivery cost breakdowns
- Pre-calculated costs for common slab sizes
- Multiple calculator tools including rebar, yard, bag and footing
- No sign-up required, data stays in browser
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| What makes it different | - All calculation rules published and adjustable, showing which rule produced each result
- Solar-term boundaries computed astronomically to the minute with historical time zone accuracy
- No prediction claims; presents charts as cultural and reflective, not scientific forecasts
- Works without birth time by showing stable and candidate pillars
- No account required for calculation; optional saving and one free AI reading after Google sign-in
| - Built by a single independent developer focused on accessible, ad-free calculation tools
- Transparent calculations using standard formulas so users see exactly how each number is produced
- Multiple concrete calculation tools sharing one consistent calculation engine
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 11 ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 9 | 0 |
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| Citation Flow (Majestic) | 30 | 16 |
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| Referring domains (Majestic) | 45 | 4 |
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