>>FTM Mac 3 App for £29.99 to download for my MacBook or the program version FTM for Mac V3 for £59.99<<
Same application, price difference appears to be one includes Ancestry subscription (6 months?) and one doesn't.
You can port your FTM (PC) data into the The FTM Mac 3 application, best if from FTM2014.
Ancestry runs deals on their FTM applications often. Call customer support and ask them for a deal on FTM Mac 3, since you're switching platforms.