Downloading PVGo 1.1.8 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. PVGo for Mac is included in Games. We recommend checking the downloaded files with any free antivirus. This free Mac app is a product of Jianfeng Wu.
From the developer:
PVGo is a Weiqi Go Baduk learning application. Based on GNU Go Artificial Intelligence Engine, who took the gold medal at the 2003 and 2006 Computer Olympiad and second place at the 2006 Gifu Challenge, beginners can follow the tutor's hint to learn how to play as an expert step by step. Any game you played saved for later review and analysis.
You may want to check out more Mac applications, such as Princess Isabella - A Witch's Curse, BoXiKoN or Sudoku Solver, which might be similar to PVGo.