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.
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 client roster and a live scrubber.
Feature-by-feature comparison
Astrolium
Astro.com
Swiss Ephemeris core
Yes — same DE431 engineYes (the original)Client roster, CRM, notes
Free tier ships 25 clientsLive predictive scrubber
Free on every planZodiacal Releasing (Spirit and Fortune)
Free L1 and L2, paid L3 and L4No native ZRProfections wheel
First-class, freeManual lookup onlyAsteroid catalog
20,000 plus named, every plan20,000 plusMobile UX
Browser, responsive on iPhone and iPadDesktop only reallyAI interpretation assistant
Free 5 prompts per monthLiz Greene static reportShareable client link
Yes — even on free tierPDF onlyAd-free
Yes on every plan
| Feature | Astrolium | Astro.com | Astro-Seek | Astrolabe Free Chart | Lunarium |
|---|---|---|---|---|---|
| Swiss Ephemeris core | Yes — same DE431 engine | Yes (the original) | — | Partial | |
| Client roster, CRM, notes | Free tier ships 25 clients | — | |||
| Live predictive scrubber | Free on every plan | — | |||
| Zodiacal Releasing (Spirit and Fortune) | Free L1 and L2, paid L3 and L4 | No native ZR | — | ||
| Profections wheel | First-class, free | Manual lookup only | Basic listing | — | |
| Asteroid catalog | 20,000 plus named, every plan | 20,000 plus | About 5,000 | — | About 50 |
| Mobile UX | Browser, responsive on iPhone and iPad | Desktop only really | Works on mobile | — | Mobile-first |
| AI interpretation assistant | Free 5 prompts per month | Liz Greene static report | None | — | None |
| Shareable client link | Yes — even on free tier | PDF only | PDF only | — | |
| Ad-free | Yes on every plan | — | Yes (mostly) |
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, not just a free chart
- You want the live predictive scrubber for profections, ZR, transits without paying
- You read on a phone or iPad and want a UI that actually works there
- You want a shareable client link, not a PDF
- You want 5 free AI assistant prompts per month to test the workflow
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 — 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 DE431 to arc-second precision. The differences are around the calculation: Astrolium has a client roster, session notes, intake forms, a live predictive scrubber, mobile UX, and a shareable client link. 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 25 client cap, then upgrades to Pro carry the rest.
- Does the Astrolium free tier ship the live predictive scrubber?
- Yes. The scrubber is free on every plan, including Lite. Drag the timeline ribbon for any chart and watch transits, profections, and ZR L1 and L2 recompute live. The free tier limits L3 and L4 sub-periods, AI assistant prompts to 5 per month, and the client roster to 25 names.
- 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.