I have brough back to live an old MackbookPro 3.1 by installing Maverick 10.9.5 (from 10.5.8) and a SSD Drive. Minimum requirements to program with JUCE4. It's got 4GB RAM and so far it runs fairly good.
I have checked and the highest XCode version I can install is XCODE6.3 (or 6.2, not really sure yet). Do you know if there is full compatibility to program IOS/OSX devices?Or maybe to make an app work with latest Iphone6 I must have Xcode7??
On the other hand in that case I can try to install El Captain OS....but I was said it takes more resources than Maverick and maybe it doesn't run so "smoothly" as Maverick does now in my old MBP3.1.
I am not a MAC fan, and I don't know too much about this, so any help is really welcome!.