From SpaceTime web site

Posted: Sat Feb 11, 2006 3:14 pm Post subject: Beta Testing
If you would like to beta test the upcoming Palm OS release of SpaceTime 2.0 please send me the following information using this link.

Full Name
Palm OS 5 Device Type
How you will use SpaceTime. (student, professor, engineer, etc...)

This first beta will only be the calculator portion of SpaceTime 2.0. This will include symbolic algebra and calculus and will be available in 1-2 weeks.