The Best Free Astrology Software in 2026
You do not have to spend hundreds of dollars to do real astrology. A surprising amount of capable software is free — web tools, source-available desktop programs, and public calculators — and for many people it is all they will ever need. This guide surveys the best free options honestly, including what Astrologer makes public for free and where a fully free desktop program goes further.
Step by step
- Decide web or desktop. Free web tools (Astrologer’s public calculators, Astro-Seek, astro.com, Cafe Astrology) need no install and work on any device. Free desktop programs (Morinus, Planetdance, Astrolog) work offline but tie you to a computer.
- Check what “free” covers. Some tools are free for everything; others are free to calculate but charge for interpretation or reports. Know where the line is before you rely on one.
- Confirm the engine. Most free tools that matter use the Swiss Ephemeris, so accuracy is rarely the issue. Astrologer, Astro-Seek, astro.com, Morinus, Planetdance, and Astrolog all do.
- Match it to your level. Beginners benefit from interpretation and a modern interface; traditional specialists may prefer a technique-first free desktop program even with a rough interface.
- Try two and keep one. Open the same birth chart in a couple of free tools, see which workflow you like, and settle on the one that fits how you actually work.
Best free web tools
No install, works on any device, and strong enough for most people:
- Astrologer — 44 free public calculators in the browser; the saved chart studio, Academy, AI, and practice management are part of paid plans.
- Astro-Seek — an exhaustive free calculator covering a huge range of chart types. See /compare/astrologer-vs-astro-seek.
- astro.com (Astrodienst) — authoritative free charts from the makers of the Swiss Ephemeris. See /compare/astrologer-vs-astrodienst.
- Cafe Astrology — free charts plus one of the largest free interpretation libraries online. See /compare/astrologer-vs-cafe-astrology.
Best free desktop programs
These work offline and go deep on technique, at the cost of a dated interface and being tied to a computer:
- Morinus — free and open-source, a favorite of traditional and Hellenistic astrologers. See /compare/astrologer-vs-morinus.
- Planetdance — remarkably feature-rich for a free Windows program, with an active scripting community. See /compare/astrologer-vs-planetdance.
- Astrolog — a long-standing, deeply customizable open-source program for technical users. See /compare/astrologer-vs-astrolog.
What you give up for free
Free does not mean inaccurate, but the trade-offs are real. Free desktop programs often have technical interfaces and little interpretation. Free web calculators can be dense and stop at the numbers. Astrologer’s public tools are modern and approachable, but the saved studio, Academy, AI readings, unlimited client records, bookings, and reports require a paid plan.
Our pick for most people
For the widest free calculator catalog, Astro-Seek is the strongest default. For free traditional desktop work and primary directions, Morinus or Planetdance are excellent. For authoritative quick charts, astro.com is hard to beat. Astrologer’s 44 public tools are a good modern entry point, especially if you may later want the paid all-in-one practice workspace.
Frequently asked questions
What is the best free astrology software?
For the widest free calculator catalog, Astro-Seek stands out. For free traditional desktop work, Morinus and Planetdance are excellent; for authoritative free charts, astro.com. Astrologer offers 44 modern public calculators, but its saved studio and practice workspace are paid.
Is free astrology software accurate?
Yes — the leading free tools use the Swiss Ephemeris, the same engine in paid professional programs, so planetary positions are accurate. You mainly trade away technique depth and polish, not accuracy.
Is there free astrology software for Mac?
Yes. Browser-based tools like Astrologer, astro.com, Astro-Seek, and Cafe Astrology run on any Mac with no install. Many free desktop programs are Windows-first, so web tools are the easiest free route on a Mac.
Is the best open-source astrology software free?
Yes — Morinus, Astrolog, and Planetdance are free, with Morinus and Astrolog being open-source. They are capable, especially for traditional work, though their interfaces are more technical than a modern web app.
Is Astrologer really free?
Astrologer offers 44 public calculators for free. The full chart studio, Academy, 150 AI readings per month, and unlimited clients and charts are included with Practitioner at $26/mo or $260/yr.