Re the phone apps, what if I don't have a 64 bit computer?

The manual says to install the java development kit 7u40 for 64 bit, but I don't have a 64 bit computer. What do I do? Will this work for 32 bit Windows 7? Should I use the Windows x86 version? Also, they list version 7u45, so I should go with that?

Additionally, I take it from looking at the manuals that the iPhone ap cannot be created without a Mac computer, and the Android app cannot be made without a Windows computer, right? If so, that's a bit disappointing. If so, any suggestions?