Tighten FREE.app
C/C++/Cocoa tool for codesign security, Developer ID, & Mac App Store Receipt Validation

Tighten Free - Download


Tighten FREE is the freely downloadable edition of Tighten. The FREE edition includes a robust code generator capable of creating a customized & obfuscated implementation of Mac App Store Receipt Validation code.

The security of the code generated by the Free edition is on par with other free samples available on the internet, with one important difference: the implementation generated for your application by Tighten FREE will be unique to your application. The symbols will be unique (or hidden) and the order of the functions and data structures will also be unique.

Consider upgrading to Tighten Pro (Enterprise security) or Tighten App.


  • Robust ANSI C Code Generator.
  • Mac App Store Receipt validation code.
  • Generates custom, obfuscated validator similar to free implementations.
  • Inspect codesign and Mac App Store Receipt values.



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