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, open-source desktop programs, and apps — and for many people it is all they will ever need. This guide surveys the best free options honestly and helps you choose, including where Astrologer’s free core fits and where a free desktop program goes further.
Step by step
- Decide web or desktop. Free web tools (Astrologer, 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 — a free browser-based professional workspace: Swiss Ephemeris charts, synastry, transits, profections, ephemeris, and astrocartography, with optional paid AI readings.
- 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 limited, but the trade-offs are real. Free desktop programs often have technical, dated interfaces and no built-in interpretation. Free web calculators can be dense and stop at the numbers. Astrologer’s free core aims to close that gap — a modern interface with plain-English interpretation — while reserving AI readings and unlimited saved charts for a low-cost Pro plan.
Our pick for most people
If you want one free tool that does most of the job on any device with a modern interface, Astrologer is a strong default. If you are a traditional specialist who wants techniques like primary directions for free and do not mind a rough interface, Morinus or Planetdance are excellent. For authoritative quick charts, astro.com is hard to beat. There is no wrong answer here — all of these are genuinely free and genuinely useful.
Frequently asked questions
What is the best free astrology software?
For a modern, do-most-things tool on any device, Astrologer’s free core is a strong pick. For free traditional desktop work, Morinus and Planetdance stand out; for authoritative free charts, astro.com. The best choice depends on your platform and how deep you go.
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?
The core — birth charts, synastry, transits, profections, the ephemeris, and astrocartography — is free in the browser. A $7.99/mo Pro plan adds AI readings and unlimited saved charts.