| What it does | Free, accurate cycle and period predictor
| Ascendant calculator for Italy and the world with IANA timezone conversion and historical rules
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| Stage | Startup
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| Founded | 2026
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| Based in | Not given
| IT
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| Pricing model | Freemium
| Free
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| Pricing | All calculators and guides are free. Period Tools Pro (optional): $4.99/month or $19.99/year.
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| Key features | - Predicts next 6 periods
- Calculates ovulation day
- Identifies fertile window
- Private on-device tracking
- Cloud sync for Pro subscribers
- No signup required
| - IANA timezone conversion with historical rules for accurate local to UTC conversion
- Supports over 7,800 Italian cities and 165,000 global cities
- Shows margin of error with ±15, ±30, or ±60 minute options
- Multi-level personalized reading including base description, decan analysis, and sun-ascendant synthesis
- Daylight saving time automatically applied based on historical rules for location and date
- All calculations processed locally in browser with no data sent to external services
- Cusps warning to alert when result is near a zodiac sign boundary
- Monthly table tool for quick checks across different times and signs
- Combined moon and ascendant calculator in one tool
- Chrome extension for quick ascendant checks from the browser
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| What makes it different | - No data collection or server storage
- Uses standard medical calculation methods
- Honest about limitations and accuracy
- No aggressive marketing tactics
| - Transparent about uncertainty: displays margin of error and warns when result is near sign boundaries
- Uses reliable IANA timezone database with historical rules, not approximations
- Privacy-first: all computation happens locally in the browser without storing or sending personal data
- Clear explanations of calculation method, limits, and how to interpret results
- Independent project maintained transparently by a single developer
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 15 ● no change since last check | 20 ● no change since last check |
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| Trust Flow (Majestic) | 20 | 8 |
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| Citation Flow (Majestic) | 9 | 23 |
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| Referring domains (Majestic) | 77 | 53 |
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Period Tools
AstroCalcolo