Astrology,
without limits.
Explore charts with unmatched speed and convenience. Your cosmic journey, streamlined.
Get startedCheckout our latest appearance on the Nightlight Astrology YouTube channel!
Astrotheoros founder, Brandon Reid, joins at the 29:55 mark to discuss what's changed over the past year.
Finally, cloud based Astrology software with real-time chart navigation.


Feature highlights
With you, anywhere.
Traditional astrology software is often limited to desktop or mobile applications exclusively, which can be inconvenient and restrictive. Astrotheoros breaks this mold by offering a fully responsive web application that works seamlessly across all devices. Whether you're on a desktop, tablet, or smartphone, you can access your astrology charts and tools without any hassle. This means you can check your transits, view your natal chart, or explore synastry compatibility on the go, without being tied to a specific device or location.



Personalization and ergonomics
Themes
Personalize your experience with multiple themes and zodiac color options.
Transits Quick Save
Capture transits instantly with a single tap and preserve significant life moments as they happen.
Placement Isolation & Rotation Lock
Focus on specific planets by isolating placements and locking chart rotation for focussed exploration.
Explore Millennia of Time
Effortlessly navigate planetary positions from ~13,000 BCE to ~16,800 CE, no page refresh required.
Dynamic Moon Phases
Display real-time moon phases on the wheel, bringing more of the outside into your charts.
Intuitive Keyboard Shortcuts
Quickly switch between charts, transits, and features with shortcuts designed for astrologers.
Dial for Quick Navigation
Swiftly explore time and planetary motion using the signature Astrotheoros dial.
Aspects Table
View all aspects for single or biwheel charts in a dedicated, organized table.
Zodiacal Releasing
Experience the power of Zodiacal Releasing, a technique that allows you to track the timing of significant life events based on the positions of the planets in your natal chart. With our intuitive interface, you can easily navigate through your Zodiacal Releasing periods, gaining insights into your past, present, and future. Explore in tandem with natal transits, or click on any period to dive deeper into the astrological influences at play. Whether you're a seasoned astrologer or just starting your journey, our Zodiacal Releasing feature provides a powerful tool for understanding the timing of your life's significant moments.

Declinations
Explore the world of declinations with a quick flip of the wheel. Declinations are a powerful tool for understanding planetary positions beyond the ecliptic. They provide insights into the north-south position of planets, enhancing your astrological analysis and chart interpretation.
Watch the announcement video for Declinations support in Astrotheoros!
Current support
At present, Astrotheoros supports only tropical astrology calculations.
The house system is a crucial component of any astrological chart. It divides the ecliptic into twelve segments, each representing a different area of life. Astrotheoros currently supports the following house systems:
- Campanus
- Equal (cusp 1 is Ascendant)
- Equal (cusp 10 is Midheaven)
- Koch
- Placidus
- Porphyry
- Regiomontanus
- Whole sign
- Whole sign (Ascendant aligned)
Astrotheoros currently supports the following placements in a chart:
- Axis
- Ascendant
- Midheaven
- Descendant
- Imum coeli
- Planetary bodies
- Sun
- Moon (option to show moon phases in place of the traditional glyph on the wheel)
- Mercury
- Venus
- Mars
- Jupiter
- Saturn
- Uranus
- Neptune
- Pluto
- Lunar nodes
- True nodes
- Mean nodes
- Hermetic Lots
- Lot of Fortune
- Lot of Sprit
- Lot of Necessity
- Lot of Eros
- Lot of Courage
- Lot of Victory
- Lot of Nemesis
- Major asteroids
- Chiron
- Pholus
- Ceres
- Pallas
- Juno
- Vesta
- Lunar apogees and perigees
- Black moon (mean apogee)
- Black moon (osculating opogee)
- Black moon (natural apogee)
- White moon (natural perigee)
Aspects are the angular relationships between planets in a chart. Orbs are the allowable margin of affect when determining whether an aspect is present.
Astrotheoros currently supports simple orb values, a single value per aspect, both when applying and separating. Aspects can be enabled/disabled on a per-chart-placement basis (e.g. disable aspects for the Lot of Fortune only). Aspects can be viewed as drawn on charts and via a dedicated aspects grid that also includes finer grained detail. The aspect types currently supported are:
- Major
- Conjunction (0°)
- Sextile (60°)
- Square (90°)
- Trine (120°)
- Opposition (180°)
- Minor
- Semisextile (30°)
- Quintile (72°)
- Semisquare (45°)
- Quincunx (150°)
- Additional
- Semiquintile (36°)
- Sesquiquintile (108°)
- Biquintile (144°)
- Sesquiquadrate (135°)
- Declinations
- Parallel (Equal)
- Contra-parallel (Opposite)
A biwheel is a chart that displays two separate charts in one. This is useful for comparing two charts side by side. Astrotheoros currently supports the following biwheel configurations:
- Transits
- Synastry
- Secondary Progressions
- Solar Returns
Declinations refer to the angular distance of a celestial body north or south of the celestial equator. We're proud of the novel and intuitive support we've introduced for declinations, including the fallowing functionality:
- A dedicated graph for viewing planetary declination alignments.
- Parallel, contra-parallel, and out-of-bounds indicators available on the aspects table and optionally on the chart wheel as well.
Terms, also known as bounds, are the divisions of a sign into five unequal parts. Each part is ruled by a different traditional planet. Astrotheoros supports the following term systems:
- Egyptian
- Ptolemean
Decans, also known as faces, are the division of a sign into three equal parts. Each part is ruled by a different traditional planet. Astrotheoros supports the following decan systems:
- Traditional (Chaldean/Ptolemaic)
- Modern (triplicity rulership)
Zodiacal Releasing is a predictive technique that uses the positions of planets in a chart to determine periods of activity and inactivity in a person's life. Astrotheoros offers a rich interactive exploration of Zodiacal Releasing periods for single charts or synastry biwheel charts (view ZR for both at once).
Pricing
Monthly
$8.99 USD + tax/ month
Annual
$79.99 USD + tax/ year
3 free months!
- Continuous updates
- Unlimited charts
- Access from any device
- Fast and ergonomic
Cancel any time, retain access to your chart data after cancellation.
Sign upAbout
Astrotheoros was founded to offer innovative, accessible, and user-friendly tools for astrologers and enthusiasts alike. We believe astrology is a powerful resource for self-discovery, personal growth, and helping others. Our mission is to make it easier for people to integrate astrology into their daily lives and practices.
Astrology is a deeply human art. Rather than automating or limiting the interpretive process, we strive to enhance the empathetic, intuitive, and creative skills that define great astrologers. Our tools are designed to support and empower, helping astrologers explore their craft in deeper and more meaningful ways.
We’re just getting started, and we’d love for you to join us in empowering astrologers everywhere.
Frequently asked questions
Astrotheoros is installed as a progressive-web-app, which means it behaves just like an app you would typically download from an app store, only you install it from the browser.
Follow the instructions for your specific device to install:
Absolutely! We love seeing Astrotheoros in the wild. Feel free to use Astrotheoros in your YouTube videos, social media posts, or any other content you create. If you're an astrological social media influencer or content creator and you'd like to collaborate with us, please reach out at info@astrotheoros.com - we'd love to hear from you!
When a subscription is cancelled, access to Astrotheoros will be limited to a table of your saved charts. We believe you should not have to worry about losing your chart data just because you can't, or don't want to, continue a subscription and we will strive to keep it accessible to you for as long as possible. If you renew your subscription, you can continue where you left off accessing and viewing your charts with the full Astrotheoros experience.
If you fully delete your account, your chart data will be deleted as well.
We want you to be completely satisfied with your Astrotheoros experience. If you are not satisfied with your subscription for any reason, you can request a refund within 30 days of your purchase.
If you have any issues with Astrotheoros, please contact us at support@astrotheoros.com