Comparison · Updated June 2026

Astrologer vs Solar Fire

Solar Fire is the software many professional astrologers grew up on — exhaustive technique coverage, deep predictive tools, and decades of refinement. It is also Windows-only, costs a one-time license of around $360, and carries a dated, dense interface. Astrologer brings the same Swiss Ephemeris accuracy and most of the everyday pro techniques to any browser, free.

Open Astrologer free

Solar Fire at a glance

The professional Windows desktop gold standard, since 1992.

Maker	Astrolabe Inc. (USA), first released 1992. Current major version: Solar Fire 9.
Platforms	Windows only (Mac via emulation). No native web or mobile.
Pricing	One-time license, about $360 new; paid upgrades roughly $99–$325.
Calculation engine	Swiss Ephemeris.
Best for	Professional astrologers on Windows who need exhaustive technique coverage and customizable reports.

Feature comparison

Feature	Astrologer	Solar Fire
Exhaustive technique coverage	Broad pro set	Yes — the deepest
Runs in the browser, any device	Yes	No — Windows install
Price	Free core / $7.99 Pro	~$360 one-time
Astrocartography + relocation	Yes	Yes
Profections, progressions, returns	Yes	Yes — extensive
Electional + chart search	Electional + VOC	Yes — powerful search
AI readings + plain-English interpretation	Yes	Report text, no AI
Live sessions + community + Academy	Yes	No
Calculation engine	Swiss Ephemeris	Swiss Ephemeris

Where Solar Fire wins

The deepest technique coverage available — primary directions, advanced electional search, and more.
Highly customizable report and page layouts refined over 30+ years.
Works fully offline once installed.

Where Astrologer wins

Runs in any browser on any device — no Windows, no install, no license key.
Free core, versus a ~$360 one-time license plus paid upgrades.
Plain-English interpretation and AI readings, which Solar Fire does not offer.
Live practitioner sessions, a community, and a built-in Academy.

The bottom line

For a full-time professional on Windows who needs every esoteric predictive technique, Solar Fire is still unmatched in raw depth. For nearly everyone else — and for pros who want their charts on any device, with interpretation and zero cost of entry — Astrologer covers the everyday work with the same Swiss Ephemeris accuracy.

Try Astrologer free

Frequently asked questions

Is Astrologer a free alternative to Solar Fire?

Largely, yes. It uses the same Swiss Ephemeris and covers most everyday professional techniques in the browser for free, though Solar Fire still goes deeper on certain esoteric predictive tools.

Does Astrologer run on Mac like Solar Fire can’t?

Yes — Astrologer runs in any browser, so Mac, Windows, Linux, tablets, and phones all work natively. Solar Fire is Windows-only.