Using cracked software is a violation of copyright law. In the United States and many other regions, the penalties for software piracy can be severe:

Cracked IPA files for iOS are modified by third parties who often inject hidden malicious code.

Instead of a guide for cracked software, here is a breakdown of why these files are risky and how you can safely access the features of Sygic GPS Navigation & Maps Why Cracked IPAs are Dangerous