As allready said by Andrew, Papywizard don't care about the Brand name of the interface.
You can connect your Mac to the Merlin head with a "wired" connection or with a "wireless" connection .... the only conditions are :
1. You must have the correct wiring between the communication device and the Merlin.
2. You must have a device who communicate via TTL 5V (USB to TTL, Bluetooth, Wifi, etc ...) the most "popular" is Bluetooth considering confort, the most "robust" is USB to TTL (wired connection)
3. The chosen connection method should be adapted to what you want achieve and the "mobility" you want to have...
Timelapse is a "very long" process and both camera's, PC/MAC, Merlin head must be capable of running sometime for hours without discontinuing !
Generaly Timelapse is quite static, in the sense that you will not move your material "every 5 minutes"
For your MAC, there is no problem for installing Papywizard.
There is a "recent" DMG file with the last version of Papywizard :http://www.papywizard.org/static/download/macos/Papywizard_2011-02-01.dmg
You can install it and play with Papywizard who is able to run in "simulation mode" without any hardware other then your MAC.
This is a good opportunity for initiation without any costs.
You will be able to try "Timelapse presets" in simulation.
Merlin + Papywizard on Windows 7 & Nokia 770 Â§ N810 & Acer (Netbook) + PanoramaApp AndroÃ¯d + Deltawave PapyMerlin BT + Autopano
Spherical Pano (180 x 360) with Canon 40D + Canon EF-S 10-22mm f/3.5-4.5 Zoom & PÃ´le Pano with Canon 5D MK2 and shaved Tokina 10-17 3.5-4.5 AF DX Fisheye
Gigapixel photography with Nikon D200 + Sigma 70-200 F 2.8 EX DG APO HSM