Esoteric Technologies is pleased to offer excellent astrology apps for three different operating systems: Astro Gold for iOS, Astro Gold for Mac OSX, and Astro Gold for Android. They each have a slightly different set of features, although they have been designed to have a similar a look and feel and ease of use. Note that chart files created by any one of these apps can be sent to and used by any of the others, as well as being compatible with chart files created with the Windows program Solar Fire.

However, it is important to understand that each of these is a separate app, designed by our programmers who spent years, in total, creating and developing each app to work at its very best on each specific operating system. So, when you purchase one of the apps for a specific operating system you are only purchasing the app for that specific operating system (although you can run it on more than one device you own which runs that same operating system, for example on both an iPhone and an iPad if you purchased the iOS app). You are of course welcome to purchase the different apps if you have devices for more than one of these operating system, but the apps are not interchangeable – they are sold via totally different app store systems. In other words, if you purchase Astro Gold for one operating system (such as the iOS app for an iPhone or iPad), and you decide to get a device with a different operating system (such as an Android), you cannot trade one Astro Gold app in for another. If you want Astro Gold on your second (or third) operating system, they must be purchased separately.