Astrolium

Free astrology software in 2026: a ranked roundup

Astrolium ranks the 5 best free astrology software options of 2026: Astro.com, Astro-Seek, Astrolabe Free, Lunarium, and Astrolium's free tier.

By Astrolium Editorial Team

Quick verdict

Free astrology software is plentiful in 2026. Astro.com is the reference, Astro-Seek is the cleanest UI, Astrolium's free tier is the only one with a built-in client roster.

Feature-by-feature comparison

Astrolium
Astro.com

  • Swiss Ephemeris core

    Yes, same DE441 engine
    Yes (the original)

  • Client roster, CRM, notes

    Free tier ships 5 clients

  • Live predictive scrubber

    Pro and up (transits start on Pro)

  • Zodiacal Releasing (Spirit and Fortune)

    Adept, L1 to L4
    No native ZR

  • Profections wheel

    First-class on Pro and up
    Manual lookup only

  • Asteroid catalog

    Named asteroids, dwarf planets, Hamburg School bodies, every plan
    20,000 plus

  • Mobile UX

    Browser, responsive on iPhone and iPad
    Desktop only really

  • AI interpretation assistant

    Pro and up (50/mo on Pro, 300/mo on Adept)
    Liz Greene static report

  • Shareable client link

    Adept and up
    PDF only

  • Ad-free

    Yes on every plan

Pricing comparison

Astrolium

From $0/mo

5 client profiles, then $11/mo for unlimited.

Astro.com

$0

Per free · Web

Astro-Seek

$0

Per free · Web

Astrolabe Free Chart

$0

Per free · Web

Lunarium

$0

Per free · Web

Who should use Astrolium

  • You want a free chart plus a free client roster (5 clients), not just a free chart
  • You read on a phone or iPad and want a UI that actually works there
  • You want unlimited natal, biwheel, and tri-wheel charts at no cost
  • You want Solar Fire .SFCHT import on a free tier
  • You plan to grow into transits, ZR, and AI on Pro ($11) and Adept ($29) later

Who should use Astro.com

  • You want the absolute reference calculation lineage of Astro.com and nothing more
  • You want a single free Hand-style interpretation report and you are done
  • Your work is primarily lunar journaling, where Lunarium fits the niche
  • You want the cleanest free chart-only UI on the web, where Astro-Seek wins that
  • You do not need a client side at all

Frequently asked questions

Is Astrolium really free, or is it a trial?
Free. The Free tier ships 5 client profiles, unlimited natal charts, 6 popular house systems, and Solar Fire .SFCHT import. No card required. Pro at $11 per month adds 25 clients, transits, progressions, AI Chat (50 prompts), and 10 branded PDF exports per month. Adept at $29 unlocks the full chart suite (synastry, returns, composite, Davison), transit scanner, knowledge base, and 300 AI prompts. None of the tiers expire.
Why use Astrolium when Astro.com is the original home of Swiss Ephemeris?
Calculation parity is not the question. Both use Swiss Ephemeris DE441 to arc-second precision. The differences are around the calculation: Astrolium has a client roster, session notes, intake forms, mobile UX, and, on the paid tiers, a live predictive scrubber and shareable client links. Astro.com has the reference calculations and 20 years of free static reports. Use both if you want.
Which free option has the best chart accuracy?
Astro.com, Astro-Seek, Astrolabe Free, and Astrolium all use Swiss Ephemeris and produce identical planetary positions to arc-second precision. Lunarium uses its own lunar-focused engine that is less precise for non-lunar bodies. For pure chart accuracy on planets, nodes, and angles, the first 4 are equivalent.
Can I switch from Astro.com to Astrolium without re-keying every chart?
Yes. Astro.com export is .AAF format. Astrolium imports .AAF directly via drag-drop. A typical Astro.com user with 50 to 200 charts migrates in under 90 seconds. The free tier of Astrolium accepts imports up to its 5 client cap; upgrading to Pro (25 clients) or Adept (unlimited) carries the rest.
Does the Astrolium free tier ship the live predictive scrubber?
No. The scrubber and transits start on Pro ($11 per month). The Free tier covers unlimited natal, biwheel, and tri-wheel charts, 6 house systems, a 5-client roster, and Solar Fire .SFCHT import, with no AI and no transit work. Pro adds transits, progressions, the predictive scrubber, profections, and AI Chat; Adept adds Zodiacal Releasing L1 to L4 and shareable client links.
What does Astrolium Adept add over the free tier?
Adept at $29 per month adds unlimited clients (versus 5 on Free), L3 and L4 zodiacal releasing sub-periods, AI Chat at 300 calls per month (or unlimited via BYOK), branded PDF reports with your logo, the full chart suite (synastry, returns, composite, Davison), and the transit scanner. Annual billing saves about 17 percent.
Are the free options really free, or do they sell my data?
Astro.com, Astrolabe Free, and Lunarium do not sell user data. Astro.com publishes its privacy posture and has 20 years of credibility. Astro-Seek is ad-supported and shows third-party ads. The Astrolium free tier has no ads, no third-party trackers, and no data sale. Free is funded by Pro subscribers.

Pick the tool that matches the work you actually do.

If your practice lives in the techniques the other tool ships and Astrolium does not, stay there. If it lives in transits, synastry, CRM, and AI-assisted prep, run the free tier for a week against a real client. Decide on the work, not the spec sheet.

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