| What it does | Free bicycle size calculator and chart comparison tool
| Free Four Pillars of Destiny chart calculator with true solar time
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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 | Free
| Freemium
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| Pricing | Not given
| 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 | - Height and inseam calculator
- Multi-brand comparison
- Geometry data including stack and reach
- Model-level sizing charts
- Standover clearance guidance
- 46 brand coverage
- Road, gravel, mountain, hybrid and kids sizing
| - 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
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| What makes it different | - Uses only official brand sources, not estimates or third-party data
- Free and no sign-up required
| - 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
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 21 ▲ +1 (up) since last check | 11 ● no change since last check |
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| Trust Flow (Majestic) | 19 | 9 |
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| Citation Flow (Majestic) | 29 | 30 |
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| Referring domains (Majestic) | 1897 | 45 |
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BaZi Calculator