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About Device Changer

An Android testing toolkit for QA engineers, developers, and security teams who need the same device context on every run.

Device Changer is a Zygisk module. It is not a cloud device farm and not an emulator. You install it on a rooted Android 12+ device, pick a saved profile, and the app under test sees that profile — model, build signals, and identifiers — instead of the physical handset.

That is the product difference: one device, many documented environments, so a bug report can name the profile instead of “works on my phone”.

Who it is for

QA teams checking the same journey across OS and identity combinations
Developers reproducing a device-specific failure without a full hardware lab
Security and risk teams validating how an app reacts to identifier or integrity signals — in a legal test scope only

What to read next

Installation guide · Device simulation · Device ID changer · Required software · Pricing · Compliance