The fact that it can be used in conjunction or as an alternative way by other programs such like Solidworks etc makes this program very good value compared if you have already bought 3d modelling softwares which are more expensive than pad itself! I would say its worth buying but not just because there's no trial version (there has been some kind) so i cant try before purchasing since im looking at different options when trying out these types apps/softs - also maybe look into using them together? They compliment each others strengths well- they do similar things anyway hence why one doesnt need another app right now!! Pad helps me create patterns easier without having too many steps required while still being able to adjust designs easily enough once created.- saves time creating my own shapes from scratch rather then drawing over pre existing ones made outside cad / solid works.