iVB-Beginner If you just want to get your feet wet, and see what it's all about, iVB-Beginner has enough controls for most small projects.
iVBasic If you want something more serious, iVBasic has a larger set of controls and features, for those more serious projects.
iVBasic+DB Designed with the home & small business in mind iVBasic+DB has all the features of iVBasic and includes robust database functionality!
iVBasic Pro Designed with business in mind iVBasic Pro has all the features of iVBasic+DB and includes many more new features!
For IVBasic only: In accordance with Apple App Store guidelines, programs created with iVBasic, iVB-Beginner, iVBasic Free, iVBasic+DB, iVBasic Pro, or any associated programs may not be submitted to the App Store, or deployed.