Forum TI-Planet.org

Hi guys!!
I found this site with a lot of app for ti-89, but want to know if some already bought.
Thanks

http://www.EveryStepPhysics.com

I didn't know of that one.
In general, many people are weary of such tools, all the more there doesn't seem to be a "try before you buy" version. Or maybe I didn't look closely enough.