Astrology Software Directory
Compare Solar Fire, AstroGold, Sirius, TimePassages, Astro-Seek, and Astro.com. Prices, platforms, and who each tool fits for professional astrologers.
The chart calculation software market for professional astrologers is small, fragmented, and hasn't changed much in 20 years. Solar Fire still dominates on Windows. Apple users have AstroGold. Everyone uses Astro.com for quick lookups. This directory maps the landscape with real prices and honest assessments.
> Note: All prices as of mid-2026 - check current pricing directly with vendors.
At a Glance
Software | Platform | Price (one-time) | Level | Best for |
|---|---|---|---|---|
Solar Fire 9 | Windows only | ~$360 | Professional | Western astrologers on Windows |
AstroGold | macOS / iOS | $249.99 (Mac) | Professional | Apple ecosystem practitioners |
Sirius | Windows only | ~$550 | Research | Research, Astrodatabank access |
Kepler 9 | Windows only | ~$300 | Professional | Mid-tier research |
TimePassages | Win / Mac / iOS / Android | Check current | Professional | Multi-device practitioners |
Astro-Seek | Web (free) | Free | Student / lookup | Quick charts without software |
Astro.com | Web (free) | Free + paid reports | All levels | Reference, free reports |
Solar Fire 9 (Astrolabe)
The industry standard for Western astrology on Windows. Most professional Western astrologers in the US, UK, and Australia use it or have used it.
Price: ~$360 one-time license. Upgrade from older versions: ~$143.
What you get: Extensive chart types (natal, synastry, composite, solar return, progressed, directions), report writers you can customize and sell, time maps, chart animations, and a large community of users who share templates.
The Windows-only limitation is significant. Apple's market share among practitioners has grown - Solar Fire leaving Mac users without an equivalent is the main complaint in the professional community.
Best for: Windows-based professional Western astrologers running a consultation practice. The report writer module alone justifies the price for practitioners generating client reports regularly.
AstroGold
AstroGold uses the same calculation engine as Solar Fire (they share the same origin in Esoteric Technologies). The result: professional-grade accuracy in an Apple-native interface.
Price:
- macOS: $249.99 one-time purchase
- iOS: Free download, 7-day trial, then subscription or lifetime unlock (check App Store for current price)
What you get: Full chart calculation capability, synastry grids, aspect tables, full interpretive text. The iOS version is the strongest professional-grade astrology app available on iPhone/iPad.
Best for: Mac and iOS-based professional astrologers. If you work from an iPhone during client sessions and a MacBook for reports, AstroGold is the natural choice.
Sirius (Cosmic Patterns)
The most feature-complete Western astrology software available. Includes the entire Astrodatabank database - thousands of charts with verified birth data from famous individuals and events.
Price: ~$550 one-time. Kepler 9.0 (lighter version): ~$300.
Windows only. The UI is functional but dated. The learning curve is steeper than Solar Fire.
For practitioners who do astrological research - testing hypotheses against hundreds of charts, studying planetary patterns in data sets - Sirius is in a different category from Solar Fire. For standard consultation practice, the extra cost over Solar Fire doesn't pay off.
Best for: Research-oriented astrologers, academics, practitioners who need Astrodatabank access, advanced students studying professional-level research methodology.
TimePassages
The only professional-grade option with true cross-platform support: Windows, Mac, iOS, and Android.
Price: Check current pricing - reviews describe it as "expensive relative to feature set."
For a practitioner who reads at their desk from a Windows laptop, uses a Mac at home, and pulls up charts on an iPhone during in-person sessions, TimePassages is the only option that works everywhere without switching software.
Best for: Multi-device practitioners who need the same software across desktop and mobile. Less powerful than Solar Fire/Sirius on pure feature count, but the cross-platform access is a real differentiator.
Free Web Tools
Astro-Seek (astro-seek.com)
Free, web-based, extensive. Natal charts, synastry, transits, solar returns, Arabic parts, asteroid calculations, composite charts - all free, all in a browser.
Ad-supported. No offline access. Not suitable for generating client reports or running your own chart calculations in a polished client-facing workflow. But for a student or practitioner who wants to look up a chart quickly, it's the best free tool available.
Best for: Students, hobbyists, quick lookups. Good supplement to paid software when you're away from your main machine.
Astro.com (Astrodienst)
The oldest and most trusted free astrology chart service on the web. Calculations use the Swiss Ephemeris - the same engine that most professional software licenses. Free natal charts, free detailed reports, extended PDF reports available for purchase.
Every working astrologer uses Astro.com for something, regardless of what paid software they own. The free chart wheel is reliable, the free written interpretations are genuinely useful for clients, and the precision is professional-grade.
Best for: Reference charts, client-facing free reports, quick verification of calculation accuracy.
What to Buy Based on Your Setup
- Windows-based professional: Solar Fire 9 (~$360 one-time)
- Mac or iPhone-based professional: AstroGold ($249.99 Mac, or iOS subscription)
- Multi-platform practitioner: TimePassages (check current pricing)
- Researcher / Astrodatabank user: Sirius (~$550)
- Student or budget-constrained: Astro-Seek + Astro.com (free)
For AI-assisted chart interpretation layered on top of these tools, see the AI tools for astrologers guide.