Jadx

Jadx is a decompiler that converts Android DEX files into Java source code. Developers use it to analyze and understand Android applications by reversing their compiled bytecode back into readable Java form. This makes it useful for security research, code review, and studying how Android apps work at the source level. The tool processes the DEX format, which is Android's executable file format, and outputs Java code that approximates the original source.

Jadx is developed by skylot and distributed under the Apache 2.0 license, making it freely available for both personal and commercial use. It is built in Java and designed specifically for Android development and analysis workflows. The tool integrates with Android development processes where examining compiled code is necessary for understanding application behavior or conducting security assessments.