Best horary astrology software 2026

Feature-by-feature comparison

Pricing comparison

Frequently asked questions

What makes horary software different from general astrology software?

Horary needs the chart cast for the moment the question reaches the astrologer, plus an opinion on whether the chart is fit to judge (radicality), plus an assignment of which planet stands for the querent and which for the quesited, plus a verdict on whether the two significators meet (perfection). A general natal tool casts the wheel and stops. A horary tool does the assignment and the verdict, or at least surfaces the data you need to judge in seconds rather than ten minutes of manual lookup.

Does horary need special features the general tools don't have?

Yes. The 7 Lilly considerations before judgment (Sun above horizon, Ascendant near a sign boundary, void of course Moon by Lilly's stricter method, etc.) are not part of natal chart practice. The Regiomontanus house system is the horary default and few generalist tools surface it as a one-click preset. Mutual reception by all 5 essential dignities matters in horary in a way it doesn't in natal. A fertility horary needs the 5th house, the Moon, and the 1st house lord weighed together, which a natal sheet won't do for you.

What's the cheapest pro-level horary tool?

Astrolium. It is free on the web, runs the same /v3/horary/analyze engine that powers paid AstroAPI customers, and ships auto-radicality, auto-significators, perfection logic, and a fertility template. The closest paid competitor with similar depth is Janus 6 at $275 USD on Windows. If you specifically need offline desktop and are on Windows, Janus is the choice. If you want browser access and the AI second opinion, Astrolium is the choice and the price is zero.

Is Solar Fire's horary module enough or do I need Janus?

Solar Fire ships a competent horary page with full Lilly dignities, almutens, void Moon by both methods, and the 7 considerations available via Chart Search. For most working practitioners that is enough. Janus goes deeper on the workflow side: dedicated horary screens, traditional rulership presets, and the considerations surfaced on the judgment screen rather than in a search filter. If horary is 20 percent of your practice, Solar Fire covers it. If horary is 60 percent, Janus is worth the second license.

Can I do serious horary in the browser?

Yes, on Astrolium. The argument against browser horary five years ago was speed and offline reliability. Modern browsers cast a chart in under 200 milliseconds and Astrolium caches your last 50 questions locally, so a lost connection doesn't lose your work. Astro-Seek also casts in the browser but stops at the wheel; it doesn't judge. For practical purposes, Astrolium is the only browser tool that does the full radicality-significator-perfection pipeline.

What about Nostradamus, KP Horary, or Prashna Kundali tools?

Nostradamus V.3 (Alphee Lavoie) is a Windows tool with an interesting AI-judgment angle, niche but real, around $200. KP Horary and Prashna Kundali tools are Vedic horary, which is a separate technique from Lilly-school Western horary; the significator logic is different (KP uses sub-lords, not house rulership). If your tradition is Vedic horary, use a Vedic-native tool. If your tradition is Western Lilly horary, the 9 tools on this page are the field.

Does Astrolium do fertility horary specifically?

Yes. The fertility template loads a Regiomontanus wheel, flags the 5th house lord and the Moon as the primary significators, weighs the 1st house lord for the querent, and reports the 7 Lilly considerations alongside a fertility-specific summary (5th house condition, Moon's next aspect, mutual reception between Moon and 5th lord). No other tool on this list ships the fertility preset out of the box. In every other tool you cast the chart and run the analysis by hand.

Why isn't TimePassages a serious option for horary?

TimePassages is built around its canned interpretation library for natal and transits. The chart engine is conservative, the school is modern psychological, and there is no Hellenistic or traditional frame at all. You can cast an event chart and read the canned natal interpretations, but horary as a technique (significator assignment, perfection, radicality) is not in the product. We included it in the round-up so readers who already own TimePassages know to add a second tool for horary work.