Intuitive Use
Delphi tries to make most of the small screen that Palm devices have. And it tries to do it in a natural, intutive way: When you look at a chart printed on paper, you often focus your eyes onto different objects when needed. For example, you search for the symbol of the moon and then you look what sign it is in or what aspects it has. Similarly you may want to focus onto trines or want to know which signs are in the 12th house.

Delphi lets you do this almost as intuitively as you are used to: Instead of focussing with your eyes only, you use the pen to focus too. Thus you search for the symbol of the moon, tap on it and immediately only aspects to the moon are shown, immediately it is indicated how strong those aspects are and the position of the moon is shown with more precision. Similarly, you can focus on aspects, signs or houses.

Otherwise Delphi behaves like a standard Palm application: You can organize charts in categories, sort them manually or alphabetically, and, if your Palm device has infrared beaming hardware, send or receive charts to/from others. This allows you to exchange charts with others quickly and in quite a natural, non-technical way.

Finally, Delphi lets you view synastry (relationship) charts; either between two birth charts or between a birth chart and the built-in astrological clock.

Accuracy
Delphi uses the astrolib library to calculate positions of sun, moon, planets up to Pluto and the true moon node with an accuracy of the order of one arc minute. Also through astrolib, you have access to UNIX time zone data for about 350 locations world-wide, plus about 2000 additional locations of which each one has been assigned to a one of the 350 UNIX time zone locations.

Click here for a detailed account of Delphi's accuracy, listing positions with errors for three charts, two from the 20th century and a historical one from the year 800, calculated using the Julian Calendar.

You be the judge if Delphi is fit to be used by professionals on the road, yet...

Manual
Click here to view the manual online, or download Delphi, including the documentation, from one of the links above.

Update Description:
New Features in Version 2.01:
- Compatible with Palm OS 5*
- Requires Palm OS v3.5 or later

Tested with the Palm OS 5 simulator (on a PC), not on a real device yet.