Download of atPeek 1.3.1 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. This Mac app was originally developed by atPurpose Technologies. The program is included in Developer Tools.
From the developer:
atPeek is a developer tool designed to explore and display resources found in iPhone applications. Its simple and intuitive interface allows to effortlessly examine normally unaccessible application details. atPeek can export individual assets or entire folders and its unique feature is its ability to decode both crushed iPhone PNG images and PVR textures back into standard PNGs.
You may want to check out more Mac applications, such as HexDecBin, Pleinpot or PLCEdit, which might be related to atPeek.