Starting with iSyncr 5.5, we've combined the PC and Mac version of iSyncr

• If you purchased iSyncr for Mac, keep using it! You can download it to your next Android device for free. We are committed to keeping it up to date with all of the same features as iSyncr for PC.
• If you purchased iSyncr for PC, keep using it! It is now just iSyncr and works with PCs and Macs just the same

We've wanted to make this change for a while, because it just makes sense. However, iSyncr for PC and iSyncr for Mac were made as different projects because of some quirks with old Android devices. These issues are not present on new devices, which now make up 80% of Android users