PilferShush Jammer is described as 'Features a passive jammer technique that engages the microphone thereby blocking other apps from using it. But does NOT listen to or record any of the audio from the microphone. It uses 0% CPU and no noticeable battery use' and is a Privacy Tool in the security & privacy category. There are 2 alternatives to PilferShush Jammer for Android and Android Tablet. The best PilferShush Jammer alternative is XPrivacyLua, which is both free and Open Source.
Revoking Android permissions from apps often let apps crash or malfunction. XPrivacyLua solves this by feeding apps fake data instead of real data.
UPDATE NOTE: this app is fully compatible with devices under up to Android 5.1. XPrivacyLua is the successor for next Android versions.
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