Thx to Crunch3r to made it possible. Now you can try out with Sierpinski / Riesel Base app - average2 (app 9) if you can run the checkpointing. The wrapper was compiled on Mac OS 10.8 so I hope its still compatible with your system.

Note:

Checkpoints will be written every 10min. If all is going as planned I will setup the update for all others apps too.

Can someone pls confirm if the checkpointing for Mac is now working?

I will update all mac apps maybe tomorrow with the new wrapper.