The 1.2.1 version of iBored for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The application lies within System Tools, more precisely System Optimization. We recommend checking the downloaded files with any free antivirus. This free software for Mac OS X is an intellectual property of Thomas Tempelmann.
From the developer:
It is basically a hex editor for disk sectors, but can also be used to edit files, including disk images.
You may want to check out more Mac applications, such as Vicomsoft FTP Client, Jitouch or AntiRSI, which might be similar to iBored.