skylot/jadx
Dex to Java decompiler
What it does
JADX is a free tool that lets you look inside Android apps and read their underlying code, even when you don't have the original source files — similar to how you might open a finished product to see how it was made. It comes with both a visual interface and a command-line version, making it accessible to anyone who needs to inspect what an Android app is actually doing under the hood.
Why it matters for PMs
For PMs, founders, and investors, this tool is widely used for competitive analysis, security auditing, and verifying what third-party Android apps or SDKs are actually doing with user data — critical concerns in an era of increasing app store scrutiny and privacy regulation. With nearly 50,000 stars on GitHub, its massive adoption signals it has become a standard part of the mobile app security and due diligence toolkit.
Early stage — limited signal data
Score updated Feb 18, 2026
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