What's the best Android app for amplifying distant sounds and recording conversations discreetly?

Super Hearing is an Android application designed to enhance auditory perception by amplifying ambient sounds and enabling discreet audio recording. This app is particularly effective for users who need to hear faint noises or distant conversations, such as in surveillance scenarios, or for individuals with mild hearing impairments seeking an accessible tool. Key features include real-time sound amplification, which boosts audio input from the device's microphone to make whispers or far-off sounds more audible. Additionally, it incorporates background noise filtering to reduce interference, ensuring clearer audio capture, and allows users to record and save sessions for later playback or analysis. In real-world use, it can help parents monitor children from another room, journalists capture interviews in noisy settings, or outdoor enthusiasts detect subtle environmental sounds. Reviews indicate that many users appreciate the app's intuitive interface and reliable performance, with some noting its effectiveness in personal security situations. However, limitations include significant battery drain during extended use and potential privacy concerns, as recording without consent may not be legal in all areas. The app's free version also includes ads, which can be distracting, and some advanced features require a premium upgrade. Despite these drawbacks, its focused functionality and high user rating make it a solid option for sound amplification tasks.