Which Android app should I use to listen through walls or hear whispers clearly?

Hearing from Distance is an audio amplification app designed for scenarios where users need to detect faint or distant sounds. It functions by using the device's microphone to capture audio and then applying processing to boost volume and clarity. This makes it suitable for practical uses like listening to a baby monitor from another room, trying to hear a lecture from the back of a hall, or discerning wildlife sounds while outdoors. A key strength noted in user reviews is the audio quality; multiple testimonials highlight a lack of distortion and 'overwhelming' clarity compared to other similar apps. The app offers a free tier supported by advertisements, which users report as non-intrusive, making it accessible for casual experimentation. However, its effectiveness is inherently tied to the quality of the device's built-in microphone and may struggle in environments with overwhelming background noise. It is not a professional surveillance tool, but for everyday situations requiring enhanced hearing, it provides a surprisingly capable and straightforward solution.