Video Tutorials

OS X Sierrs and El Capitan compatible, Not compatible with Catalina

System Requirements
Mac OS Versions from 10.6 through to and include Mac High Sierra and Mojave.
Not compatible with Catalina beta.
Minimum free disk space 200 MB

The finest Astrology software exclusively for the Mac

The foundation of all astrological exploration and research is the chart. Io Edition gives you the ability to produce the most accurate precision charts and graphs available to astrologers today. Io Edition is ideal for
beginning astrologers and a must own
for counseling or research
Io Edition is more powerful
than ever!
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TCR has created a collection of smart interpreters that let you create a detailed interpretation of any astrological chart with the click of a mouse. Eight great programs include Natal, forecasting, relationship, medical astrology, a very special child's horoscope, and the new Lunar and Solar return.
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We develop the world's finest astrology software for the Mac at the best prices.

Whether you are new to astrology, a casual amateur, a new student or an advanced Professional Astrologer (counselor or researcher), you can depend on TCR's software and the support of the team behind it.

The Time Cycles Research team is dedicated to developing the highest quality in Astrology Software for the Mac users.

Charts come to life with Io Sprite.
Watch in real time as planetary influences change and are modified by the cyclic movement of these heavenly bodies. If you are a counseling astrologer or considering it, this program is a must. When a client calls for answers you can be on top of the moment.     Read more >

One of the most exciting new techniques to come into astrology in the last century is the development of the relocated chart. Io Cartography gives you three different techniques with which to explore a relocated chart. You'll find this program one of the most fascinating you own. Geographic location DOES matter.     Read more >


Researchers love this program - of course. But, it's not just for them. If you are an astrologer, professional or amateur you find that you build files of more and more charts. Looking for specific events, common characteristics or whatever you might think of is easy with this program. Drag-and-drop lets you move charts easily and quickly.     Read more >

Astrology software for Macintosh, both powerful and accurate. Natal, transits, progressions, sunrise charts, relationships, asteroids.
Io Edition, State-of-the-Art astrology charting software for your Macintosh more powerful than ever! Astrology Software for Mac.
Io Detective, software that you can easily examine groups of astrology charts on your Macintosh from a few to thousands. Astrology Software for Mac.
Io Sprite, A dynamic charting Mac software, the first choice among top astrologers for doing any kind of fluid chart analysis on a Macintosh. Astrology Software for Mac.
Io Interpreters, creating comprehensive, accurate interpretive astrology report software on your Mac is easier than ever! Astrology Software for Mac.
The finest Astrology software exclusively for the Macintosh

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